Question 1 :
Which of the below is one of the laws of refraction?<br>
Question 2 :
The incident ray, the normal at the point of incidence and the refracted ray:
Question 4 :
When the angle between incident ray and mirror is increased, the angle of reflection:
Question 5 :
If incident ray lies in $x-y$ plane, reflected ray lies in $x-y$ plane, then the normal will lie in:<br/>
Question 7 : <div><span>The incident ray,reflected ray and the normal ray, </span><span>all lie on the ______ plane.</span><span> </span><br/></div>
Question 8 :
A Point source of Light is place 4 m below the surface of water of refractive index 5/3. the minimum diameter of a disc which should be placed over the source on the surface of water to cut-off all light coming out of water is $(\mu = 5/3 ) $
Question 9 :
<span>According to laws of reflection, angle of incidence is equal to the angle of reflection. This statement:</span>
Question 10 :
The dual nature of wave states that all matter has properties of:<br/>
Question 13 :
What will be the nature of charge on the metal paper clip of electroscope when a positively charged body is brought in contact with it?
Question 14 :
You are provided with a negatively charged gold leaf electroscope. State and explain what happens when an uncharged metal rod is brought near the disc of electroscope.
Question 16 :
'When two bodies are rubbed together, charges on them are ___________'.<br>
Question 19 :
A charged rod is brought near a negatively charged pith ball electroscope. What conclusion would you draw about the charge on the rod if pith ball moves towards the rod ?
Question 20 :
A gold leaf electroscope is given a positive charge so that its leaves diverge. How is the divergence of leaves affected, when an uncharged rod is brought near its disc ?
Question 23 :
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 25 : Assertion (A): Steel is more elastic than rubber.<br/>Reason (R) : Under a given deforming force, steel is deformed less than rubber.<div><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</div>
Question 26 :
Assertion: Strain is a unitless quantity.
Reason: Strain is equivalent to force
Question 27 :
Two wires X and Y are made of different metals. The Young modulus of wire X is twice that of wire Y. The diameter of wire X is half that of wire Y.<br>The wires are extended with the same strain and obey Hooke's law.<br>What is the ratio $\dfrac{tension in wire X}{tension in wire Y}$?<br>
Question 28 :
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 29 :
The property to restore the natural shape or to oppose the deformation is called :
Question 30 :
Which property of an object cannot be changed by applying forces?
Question 31 :
A student appears in an exam and is asked to measure the length of a side of a triangle. Which of the following instruments is suitable for the purpose?
Question 33 :
Which of the following are dimensionless quantities,(symbols have their usual meaning)<br>[$\eta$=viscocity,$\rho$=density,$r$=radius,$k$=thermal conductivity,$c$=heat capacity.]
Question 36 :
Which of the following instrument can be used to determine the radius of curvature of a spherical surface?
Question 37 :
The SI unit of coefficient of mutual inductance of a coil is
Question 39 :
The ratio of SI unit to CGS unit of $g$ is :<br/>
Question 42 :
Position vector that defines position of vector in three dimensions having formula of<span><br></span>
Question 43 :
For non zero vectors $a,b$ and $c$, if $a+b+c=0$ then which relation true:-
Question 45 : <span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small"></span></span><p class="wysiwyg-text-align-left">Which of the following units could be associated with a scalar quantity?</p>
Question 46 :
The vectors $\hat { i } +2\hat { j } +3\hat { k } $, $2\hat { i } -\hat { j } +\hat { k } $ and $3\hat { i } +\hat { j } +4\hat { k } $ are so placed that the end point of one vector is the starting point of the next vector. Then the vectors are :
Question 47 :
Given $\vec p= (2,-4,1), \vec q = (3,-1,2), \vec r = (5,5, 4)$. Then $\vec{PQ}$ and $\vec{QR}$ are
Question 49 :
The Polygon Law of Vector Addition is simply an extension of ____________.
