Question 2 :
The property of metals which allows them to be drawn into wires is known as :<br/>
Question 4 :
Fill in the blank.<br/>In a technical sense a substance with a ________ elasticity is one that requires a ______  force to produce a distortion-for example, a steel sphere. <br/><br/>
Question 5 :
 A cable that can support a load of 1000 N is cut into equal parts. the maximum load that can be supported by the either part is:-
Question 7 :
The Young's modulus of the material of the wire of length $L$ and radius $r$ is $Y{ N }/{ { m }^{ 2 } }$. If the length is reduced to ${ L }/{ 2 }$ and radius ${ r }/{ 2 }$, the Young's modulus will be:
Question 12 :
Solids which break or rupture above the elastic limit are classified as:
Question 14 :
When a body undergoes a linear tensile strain if experience a lateral contraction also. The ratio of lateral contraction to longitudinal strain is known as
Question 15 :
A wire of length L and radius r fixed at one end and a force F applied to the other end produces and extension $l$ . The extension produced in another wire of the same material of length 2Land radius 2r by a force 2 F is:
Question 16 :
Change in the shape of a body caused by the application of a force (stress) is called as :<br/>
Question 17 :
The property of metals which allows them to be drawn readily into thin wires is:
Question 18 :
There are two wires of same material. their radii and lengths are both in the ratio 1:2. if the extensions produced are equal, what is the ratio of the loads?
Question 19 :
The limit upto which the stress is directly proportional to strain is called<br>
Question 20 :
Assertion: Stress is the internal force per unit area of a body.
Reason: Rubber is more elastic than steel.
Question 21 :
The bulk modulus of an ideal gas at constant temperature is :
Question 22 :
Energy per unit volume in a stretched wire is equal to
Question 23 :
A wire suspended vertically from one of its ends is stretched by attaching a weight of 200 N to the lower end. The weight stretches the wire by 1 mm. Then the elastic energy stored in the wire is:          
Question 24 :
The elastic energy stored per unit volume in a stretched wire is
Question 25 :
If longitudinal strain for a wire is $0.03$ and its poisson ratio is $0.5$, then its lateral strain is
Question 26 :
A wire ($Y=2\times {10}^{11}N/m$) has length $1m$ and area $1m{m}^{2}$. The work required to increased its length by $2mm$ is
Question 27 :
The force required to double the length of the steel wire of area of cross section $5\times 10^{-5}m^{2}\quad (Y=20\times 10^{10}Pa)$ in $N$ is:
Question 28 :
The property of a material due to which shape is changed permanently is known as:<br/>
Question 29 :
State whether true or false :<br>The metal used in construction of a bridge should have high Young's modulus.<br><br>
Question 31 :
Assertion: Strain is a unitless quantity.
Reason: Strain is equivalent to force
Question 32 :
A compressive force is applied to a uniform rod of rectangular cross-section so that its length decreases by $1\%$. If the Poisson’s ratio for the material of the rod be $0.2$, which of the following statements is correct ? The volume approximately .....”
Question 33 :
Substances which can be stretched to cause large strains are called
Question 34 :
A weightless rod is acted on by upward parallel forces of $2N$ and $4N$ ends $A$ and $B$ respectively.; The total length of the rod $AB=3m$. To keep the rod in equilibrium a force of $6N$ should act in the following manner.
Question 35 :
Assertion: If we apply force to a lump of putty or mud, they have no gross tendency to regain their previous shape.
Reason: This type of substances are called plastic substances.
Question 36 :
Which property of an object cannot be changed by applying forces?
Question 38 :
One end of a uniform rope of length L and of weight w is attached rigidIy to a point in the roof and a weight w$_1$ is suspended from its lower. If s is the area of cross-section of the wire, the stress in the wire at a height $\displaystyle \frac{3 L}{4}$ from its lower end is:
Question 39 :
State whether true or false :<br>The hollow shaft is much stronger than a solid shaft of same mass, same length and same material.
Question 41 :
The volumetric change of the fluid caused by a resistance is known as :<br/>
Question 42 :
The extension produced in a wire by the application of a load is $3.0$ mm. The extension produced in a wire of the same material and length but half the radius by the same load is:
Question 43 :
The compressibility of water is $\displaystyle 46.4\times 10^{-6}/atm $ This means that
Question 45 :
Change in shape of a body caused by the application of stress is called:<br>
Question 46 :
A material has Poisson's ratio $0.5$. if a uniform rod of it suffers a longitudinal strain of $2\times {10}^{3}$, then the percentage change in volume is
Question 47 :
Assertion (A): Steel is more elastic than rubber.<br/>Reason (R) : Under a given deforming force, steel is deformed less than rubber.<br/>A) Both Assertion and Reason are true and the reason is correct explanation of the assertion<br/>B)Both Assertion and Reason are true, but reason is not correct explanation of the assertion<br/>C) Assertion is true, but the reason is false<br/>D) Assertion is false, but the reason is true
Question 48 :
The temperature of a wire is doubled. The Young's modulus of elasticity will ?
Question 49 :
Let ${Y}_{S}$ and ${Y}_{A}$ represent Young's modulus for steel and aluminium respectively It is said that steel is more elastic than aluminium. Therefore, it follows that
Question 50 :
A spring is made of steel and not of copper because
Question 51 :
The relation between Young's modulus $Y$, bulk modulus $K$ and modulus of elasticity $\sigma$ is
Question 52 :
A metal string is fixed between rigid supports. It is initially at negligible tension. Its Young's modulus is Y, density is $\rho$  and coefficient of linear expansion is $\alpha$. It is now cooled through a temperature t, transverse waves will move along it with a speed of :<br/>
Question 53 :
What is the poisson's ratio of a wire, whose Young's modulus and Bulk's modulus are equal
Question 55 :
When temperature of gas is $20^{0}C$ and pressure is changed from $P_1$=1.01$\times 10^{5}$Pa to $P_2$=1.165$\times 10^{5}$Pa then the volume changed by 10%. the bulk modulus is:
Question 56 :
Consider the following two statements A and B and identify the correct answer.<br>A) The product of bulk modulus of elasticity and compressibility is one.<br>B) Tangential stress applied on the body only produes change in shape but not in size.
Question 57 :
A rubber cord catapult has cross-section area $25mm^2$ and initial length of rubber cord is $10cm$. It is stretched to $5cm$ and then released to project a missile of mass $5gm$. Taking, $Y_{rubber}=5\times 10^8N/m^2$, velocity of projected missile is 
Question 58 :
Two wires $A$ and $B$ have equal lengths and are made of the same material, but the diameter of wire $A$ is twice that of wire $B$. Then, for a given load:
Question 59 :
A cubical ball is taken to a depth of 200m in a sea. The decrease in volume observed to be 0.1%. The bulk modulus of the ball is ($10={ ms }^{ -2 }$)
Question 60 :
(i) In Searle's experiment, after every step of loading, one waits for sometime (2 or 3 min) before taking reading.<br>(ii) In this duration, the wire becomes free from kinks.
Question 63 :
 A 2.0 cm cube of some substance has its upper face displaced by 0.15 cm , by a tangential force of 0.30 N fixing its lower face. Calculate the rigidity modulus of the substance.
Question 65 :
Two wires A and B of the same dimensions are under loads of $4$ and $5.5 kg$ respectively. The ratio of Young's modulii of the materials of the wires for the same elongation is:
Question 66 :
Ratio of lengths of two brass wires is 3 : 4; their areas of cross section are in the ratio 2:3. When same force is applied on them, the elongations produced will be in the ratio:
Question 67 :
Assertion: Ratio of isothermal bulk modulus and adiabatic bulk modulus for a monoatomic gas at a gIven pressure is $\dfrac{3}{5}$
Reason: This ratio is equal to $\displaystyle \gamma =\frac{C_{p}}{C_{v}}$
Question 69 :
When a coil spring is compressed, the work is done on the spring. The elastic potential energy:
Question 70 :
The Young's modulus of steel is twice that of brass. Two wires of sample length and of same area of cross section, one of steel and another of brass are suspended from the same roof. If we want the lower ends of the wires to be at the same level, then the weights added to the steel and brass wires must be in the ratio of:
Question 71 :
A spring of spring constant 5 x 10$^{3}$Nm$^{-1}$ is stretched initially by $5 cm$ from the unstretched position. Then the work required to stretch it further by another $5 cm$ is       
Question 75 :
A uniform heavy rod of length $L$ and area of cross-section area $A$ is hanging from a fixed support. If Young's modulus of the material of the rod is $Y$, then the increase in the length of the rod is ($\rho$ is a density of the material of the rod) :
Question 76 :
A metallic beam having Young's modulus $Y$ is supported at the two ends. It is loaded at the centre. The depression of the centre is proportional to
Question 77 :
A $10 \ meter$ long thick rubber pipe is suspended from one of its ends. The extension produced in the pipe under its own weight will be :$(Y=5\times10^{6}N/m^{2}$ and density of rubber =$ 1500 \ kg/m^{3}$)<br/>
Question 78 :
The breaking stress of aluminium is $7.5\times {10}^{7}N{m}^{-2}$. The greatest length of aluminium wire that can hang vertically without breaking is<br>(Density of aluminium is $2.7\times {10}^{3}kg{m}^{-3}$)
Question 79 :
A steel wire of length $30cm$ is stretched ti increase its length by $0.2cm$. Find the lateral strain in the wire if the poisson's ratio for steel is $0.19$ :
Question 80 :
If a wire is stretched by applying force at one of its ends, then the elastic potential energy density in terms of Young's modulus <i>Y </i>and linear strain $\alpha$ will be<br/>
Question 81 :
A copper wire 3 m long is stretched to increase its length by 0.3 cm. Find the lateral strain produced in the wire , if poisson's ratio for copper is 0.25
Question 82 :
In the Searle's method to determine the Young's modulus of a wire, a steel wire of length $156\ cm$ and diameter $0.054\ cm$ is taken as experimental wire. The average increase in length for $1.5\ kg\ wt$ is found to be $0.050\ cm$. Then the Young's modulus of the wire is
Question 83 :
Four wires made of same materials are stretched by the same load. Their dimensions are given below. The one which elongates more is ?
Question 84 :
Young's modulus of a metal is $15 \times 10$ <br> $^{11}$ Pa. If its poisson's ratio is $0.4$. The bulk modulus of the metal in $Pa$ is :
Question 85 :
The diameters of two steel wires are in the ratio 2: 3. Their lengths are equal. When same force is applied on them, the ratio of the elongation produced is
Question 86 : Match the column I with column II<br><table class="wysiwyg-table"><tbody><tr><td>Column I</td><td>Column II</td></tr><tr><td>(A) The of shape rubber heel<br>changes under stress</td><td>(p) Young's modulus of elasticity is involved</td></tr><tr><td>(B) In a suspended bridge, there is a strain in the ropes by the load of the bridge</td><td>(B) Bulk modulus of elasticity is involved</td></tr><tr><td>(C) In an automobile tyre, when air is compressed, the shape of tyre changes</td><td>(r) Modulus of rigidity is involved</td></tr><tr><td>(D) A solid body is subjected to a deforming force</td><td>(s) All the moduli of elasticity are involved</td></tr></tbody></table>
Question 87 :
The length of a wire is $l_1$ when tension is $T_1$ and $l_2$ when tension is $T_2$. The natural length of the wire is<br>
Question 88 :
When temperature of a gas is $20^oC$ and pressure is changed from ${ P }_{ 1 }=1.0\times { 10 }^{ 5 } Pa$ to ${ P }_{ 2 }=1.65\times { 10 }^{ 5 } Pa$ and the volume is changed by 10%. The bulk modulus is :
Question 89 :
From a steel wire of density $\rho$ is suspended a brass block of density $\rho_b$. The extension of steel wire comes to $e$. If the brass block is now fully immersed in a liquid of density $\rho_{\gamma}$ the extension becomes $e'$. The ratio $\dfrac{e}{e^{'}}$ will be
Question 90 :
A woman with a mass of $65\ kg$ puts all her weight on one heel of her high-heel shoe. The cross-sectional area of the heel is $1\ cm^{2}$. According to the table, if she is standing on a pane of glass that is flat against the ground, does the glass break :
Question 91 :
A given quantity of an ideal gas is at pressure $P$ and absolute temperature $T.$ The isothermal bulk modulus of the gas is:
Question 92 :
A wire is stretched by a force $F$. If $s$ is the strain developed and $Y$ is Young's modulus of material of wire, then work done per unit volume is 
Question 93 :
An elongation of $0.1^\circ$ in a wire of cross sectional area $10^{-6}m^{2}$ causes a tension of 100n. The Young's modulus is-
Question 94 :
The length of a rubber cord is ${l}_{1}$ when the tension is $4N$ and ${l}_{2}m$ when the tension is $6N$. The length when the tension is $9N$, is:
Question 95 :
A cube is shifted to a depth of $100m$ is alake. The change in volume is $0.1$%. The bulk modules of the material is nearly<br>
Question 96 :
Two wires $A$ and $B$ have the same cross section and are made of the same material, but the length of wire $A$ is twice that of $B$. Then, for a given load.
Question 97 :
The modulus of elasticity of a material does not depend upon<br>
Question 98 :
If in a wire of Young's modulus $Y$, longitudinal strain $X$ is produced then the potential energy stored in its unit volume will be :
Question 99 :
Assertion (A) : Lead is more elastic than rubber.<br>Reason (R) : If the same load is attached to lead and rubber wires of the same cross-sectional area, the strain of lead is very much less than that of rubber.
Question 100 :
The diameter of a brass rod is 4 mm and Young's modulus of brass is $9\times 10^{10}N/m^{2}$. The force required to stretch by 0.1% of its length is :-
Question 101 :
A uniformly tapering conical wire is made from a material of Young's modulus $Y$ and has a normal, unextended length $L$. The radii, at the upper and lower ends of this conical wire, have values $R$ and $3R$, respectively. The upper end of the wire is fixed to a rigid support and a mass $M$ is suspended from its lower end. The equilibrium extended length, of this wire, would equal to:<br/>
Question 102 :
The length of a metal is $l_1$ when the tension in it is $T_1$ and is $l_2$ when the tension is $T_2$. The original length of the wire is  :<br/>
Question 103 :
The density of water at the surface of the ocean is $\rho$ and atmospheric pressure is ${P}_{0}$. If the bulk modulus of water is $K$, what is the density of ocean water at a depth where the pressure is then$n{P}_{0}$?
Question 104 :
A uniform pressure p is exerted on all sides of a solid cube at temperature ${t^0}C$. By what amount should the temperature of the cube be raised in order to bring its volume back to the value it had before the pressure was applied? The coefficient of volume expansion of the cube y and the bulk modulus is B.
Question 105 :
$32 g$ of $O_{2}$ is contained in a  cubical container  of side $1 m$  and  maintained at a temperature of $127 ^{0} C$. The isothermal bulk modulus of elasticity of the gas in terms of universal gas constant $R$ is
Question 106 :
A solid sphere of radius r made of a soft material of bulk modulus K is surrounded by a liquid in a cylindrical container. A massless piston of area a floats on the surface of the liquid, covering entire cross section of cylindrical container. When a mass m is placed on the surface of the piston to compress the liquid, the fractional decrement in the radius of the sphere, $\left(\displaystyle\frac{dr}{r}\right)$, is?
Question 107 :
The Young's experiment is performed with the lights of blue $\left( \lambda =4360\mathring { A } \right) $ and green colour $\left( \lambda =5460\mathring { A } \right) ,$ if the distance of the ${ 4 }^{ th }$ fringe from the centre is x, then
Question 108 :
$\mathrm{A}$ student performs an experiment to determine the Young's modulus of a wire, exactly 2 $\mathrm{m}$ long, by Searle's method. In a particular reading, the student measures the extension in the length of the wire to be $0.8 mm$ with an uncertainty of $\pm 0.05$ mm at a load of exactly $1.0 kg$. The student also measures the diameter of the wire to be $0.4 mm$ with an uncertainty of $\pm 0.01$ mm. Take $\mathrm{g}=9.8\mathrm{m}/\mathrm{s}^{2}$ (exact). The Young's modulus obtained from the reading is <br>
Question 109 :
If a rubber ball is taken down to a 100 m deep lake, its volume decreases by 0.1%. If $g=10\quad m/{ s }^{ 2 }$ then the bulk modulus of elasticity for rubber, in N/${ m }^{ 2 }$, is 
Question 110 :
An increase in pressure required to decreases the $200$ litres volume of a liquid by $0.004\%$ in the container is(Bulk modulus of the liquid $=2100$ MPa).
Question 111 :
When an elastic material with Young's modulus Y is subjected to stretching stress S, elastic energy stored per unit volume of the material is
Question 112 :
A metal wire of length L, area of cross section A and Young's modulus Y is stretched by a variable force F such that F is always slightly greater than the elastic forces of resistance in the wire. Then the elongation of the wire is $l$.<br>
Question 113 :
The Poisson's ratio of the material of a wire is$0.25 .$ If it is stretched by a force F, the longitudinal strain produced in the wire is $5 \times 10 ^ { - 4 } .$ What is the percentage increase in its volume?
Question 114 :
Water is flowing on a horizontal fixed surface, such that its flow velocity varies with $y$ (vertical direction) as $v = k \left (\dfrac {2y^{2}}{a^{2}} - \dfrac {y^{3}}{a^{3}}\right )$. If coefficient of viscosity for water is $\eta$, what will be shear stress between layers of water at $y = a$?
Question 115 :
In a Young's double slit experiment with sodium light, slits are 0.589 m apart. The angular separation of the maximum from the central maximum will be (given $\lambda =589$nm,):
Question 116 :
The speed of a traverse wave travelling on a wire having a length $50\space cm$ and mass $50\space g$ is $80\space ms^{-1}$. The area of cross-section of the wire is $1\space mm^2$ and its Young's modulus is $16\times10^{11}\space Nm^{-2}$. Find the extension of the wire over natural length.
Question 117 :
A rubber ball is brought into 200 m deep water, its volume is decreased by 0.1% then volume  elasticity coefficient of the material of ball will be:<br/>$(Given\ \rho = 10^3 kg/m^3$ and $ g = 9.8 ms^{-2})$
Question 118 :
When a metallic wire is stretched with a tension $\displaystyle { T }_{ 1 }$ its length is $\displaystyle { l }_{ 1 }$ and with a tension $\displaystyle { T }_{ 2 }$ its length is $\displaystyle { l }_{ 2 }$. The original length of the wire is:
Question 119 :
The shear modulus for a metal is 50000 MPa. Suppose that a shear force of 200 N is applied to the upper surface of a cube of this metal that is 3.0 cm on each edge. How far will the top surface be displaced?
Question 120 :
<br/>The equation of a stationary wave in a metal rod is given by $y=0.002\displaystyle \sin\frac{\pi x}{3}\sin 1000t$, where $\mathrm{x}$ is in cm and $\mathrm{t}$ is in second. The maximum tensile stress at a point $\mathrm{x}=2\mathrm{c}\mathrm{m}$ (Young's modulus $\mathrm{Y}$ of material of rod $=8\times 10^{11}dyne/cm^{2})$ will be<br/>
Question 122 :
Find the restoring couple applied by the cylinder in equilibrium condition:
Question 123 :
Two wires having same length and material are stretched by same force. Their diameters are in the ratio 1 : 3. The ratio of strain energy per unit volume for these two wires (smaller to larger diameter) when stretched is
Question 124 :
In performing an experiment to determine the Young's modulus Y of steel, a student can record the following values:<br>length of wire l$=(\ell_{0}\pm\Delta$l$){m}$<br>diameter of wire ${d}=({d}_{0}\pm\Delta {d})$ mm<br>force applied to wire ${F}$=$({F}_{0}\pm\Delta {F}){N}$<br>extension of wire ${e}=({e}_{0}\neq\Delta {e})$ mm<br>In order to obtain more reliable value for Y, the followlng three techniques are suggested. <br>Technique (i) A shorter wire ls to be used.<br>Technique (ii) The diameter shall be measured at several places with a micrometer screw gauge.<br>Technique (iii) Two wires are made irom the same ntaterial and of same length. One is loaded at a fixed weight and acts as a reference for the extension of the other which is load- tested<br>Which of the above techniques is/are useful?<br>
Question 125 :
Find how the volume density of the elastic deformation energy is distributed in a steel rod depending on the distance $r$ from its axis. The length of the rod is equal to $l$, the torsion angle to $\varphi$.
Question 126 :
The Young's modulus of a material is $2\times { 10 }^{ 11 }N/{ m }^{ 2 }$ and its elastic limit is $1.8\times { 10 }^{ 8 }N/{ m }^{ 2 }$. For a wire of $1m$ length of this material, the maximum elongation achievable is
Question 127 :
Young's moduli of two wires A and B are in the ratio $7 : 4$. Wire A is 2 m long and has radius R. Wire B is $1.5 m $ long and has radius 2 mm. If the two wires stretch by the same length for a given load, then the value of R is close to : :
Question 128 :
The increase in energy of a metal bar of length 'L' and cross-sectional area 'A' when compressed with a load 'M' along its length is<br>(Y = Young's modulus of the material of metal bar)<br>
Question 129 :
Two wires of the same material (young's modules Y) and same length L but radii $R$ and $2R$ respectively are joined end to end and a weight $W$ is suspended from the combination as shown in the figure. the elastic potential energy in the system in equilibrium is <br>
Question 130 :
A heavy uniform rod is hanging vertically form a fixed support. It is stretched by its won weight. The diameter of the rod is 
Question 131 :
One end of a uniform rod of mass $M$ and cross-sectional area $A$ is suspended from the other end. The stress at the mid-point of the rod will be :
Question 132 :
The length of a metal wire is $l_{1}$ when the tension in it is $T_{1}$ and is $l_{2}$ when the tension is $T_{2}$. The natural length of wire is
Question 133 :
A mass m is hanging from a wire of cross sectional are A and length L. Y is young's modulus of wire. An external force F is applied on he wire which is then slowly further pulled down by $\triangle x$ from its equilibrium position. Find the work done by the force F that the wire exerts on the mass:
Question 134 :
Two wire A and B have equal lengths and are made of the same material, but the diameter of A is twice that of wire B. Then, for given load<br>
Question 135 :
The length of a wire increases by $8mm$ when a weight of $5kg$ is suspended from it. If other things remain the same but the radius of the wire is doubled, what will be the increase in its length?
Question 136 :
A brass rod of length $1 \ m$ is fixed to a vertical wall at one end, with the other end keeping free to expand. When the temperature of the rod is increased by $120^{\circ}C$ , the length increases by $3 \ cm$. What is the strain?
Question 137 :
Two wires of different material and radius have their length in ratio of $1:2.$ if these were stretched by the same force$,$ the strain produced will be in the ratio$.$  
Question 138 :
A horizontal aluminium rod of diameter 4.8 cm projects 5.3 cm from a wall. A 1200 kg object is suspended from the end of the rod. The shear modulus of aluminium is $3.0 \, \times \, 10^{10} \, N/m^2.$ Neglecting the mass of the rod, find the vertical deflection of the end of the rod. 
Question 139 :
A sample of a liquid has an initial volume of $1.5 L$. The volume is reduced by $0.2 mL,$ when the pressure increases by $140 kPa$. What is the bulk modulus of the liquid.<br/><br/>
Question 140 :
A steel wire 2 m long is suspended from the ceiling. When a mass is hung at its lower end, the increase in length recorded is 1 cm. Determine the strain in the wire.
Question 141 :
A solid sphere of radius $R$ and density $\rho $ is attached to one end of a mass-less spring of force constant $k$. The other end of the spring is connected to another solid sphere of radius $R$ and density $3\rho $. The complete arrangement is placed in a liquid of density $2\rho $ and is allowed to reach equilibrium. The correct statement(s) is (are)<br>
Question 142 :
A tension of $20\  N$ is applied to a copper wire of cross sectional area $0.01 cm^2$, Young's Modulus of copper is $1.1\times 10^{11} N/m^2$ and Poisson's ratio is 0.32. The decrease in cross sectional area of the wire is:
Question 143 :
An Aluminium and Copper wire of same cross sectional area but having lengths in the ratio $2 : 3$ are joined end to end. This composite wire is hung from a rigid support and a load is suspended from the free end. If the increase in length of the composite wire is $2.1 \ mm$, the increase in lengths of Aluminium and Copper wires are : [$\displaystyle { Y }_{ Al }=20\times { 10 }^{ 11 }{ N }/{ { m }^{ 2 } }$ and $\displaystyle { Y }_{ Cu }=12\times { 10 }^{ 11 }{ N }/{ { m }^{ 2 } }$]
Question 144 :
A copper wire and a steel wire of the same length and same cross section are joined end to end to form a composite wire. The composite wire is hung from a rigid support and a load is suspended from the other end. If the increase in length of the composite wire is $2.4\ mm$, then the increase in lengths of steel and copper wires are:$(Y_{cu} = \, 10 \times \, 10^{10} \, N/m^2, \, Y_{steel} = \, 2 \times \, 10^{11} \, N /m^2)$  
Question 145 :
Take, bulk modulus of water $B = 2100\ MPa$.<br/>What increase in pressure is required to decrease the volume of $200\ litres$ of water by $0.004$ percent?
Question 146 :
Temperature of a gas is $20^{0}\mathrm{C}$ and pressure is changed from $1.01\times 10^{5}$ Pa to $1.165\times 10^5\mathrm{P}\mathrm{a}$. If volume is decreased isothermally by 10%. The bulk modulus of gas is (in $Pa$):<br/><br/>
Question 147 :
A solid sphere of radius 20cm is subjected to a uniform pressure of $ 10^{6}$ $N m^{-2}$. If the bulk modulus is $1.7 \times 10^{11}$ $N m^{-2}$, the decrease in the volume of the solid is approximately equal to:
Question 148 :
Two wires of the same radius and material and having length in the ratio $8.9:7.6$ are stretched by the same force. The strains produced in the two cases will be in the ratio:
Question 149 :
The stress along the length of a rod(with rectangular cross section) is $1\%$ of the Young's modulus of its material. What is the approximate percentage of change of its volume? (Poisson's ratio of the material of the rod is $0.3$).
Question 150 :
A wire elongates by $1 mm$ when a load W is hanged from it. lf the wire goes over a pulley and two weights $\mathrm{W}$ each are hung at the two ends, the elongation of the wire will be (in mm):<br/>
