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Formula Booklet – Physics XII, , CONTENTS, Description, , Page Number, , 1., , Elecrotstatics and Capacitance, , 03, , 2., , Current Electricity, , 12, , 3., , Magnetic Effects of Current, , 15, , 4., , Magnetic Properties of Current, , 18, , 5., , Electromagnetic Induction, , 20, , 6., , Alternating Current, , 22, , 7., , Light, , 26, , 8., , Modern Physics, , 35, , 9., , Some Study Tips, , 43, , QUEST - Power Coaching for IITJEE, 1, Vigyan Vihar, Near Anand Vihar, Delhi – 92. Ph: 55270275, 55278916, E-16/289, Sector 8, Rohini, Delhi – 85, Ph: 55395439, 30911585, , 2
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Formula Booklet – Physics XII, , ELECTROSTATICS & CAPACITANCE, ELECTROSTATICS, 1., (a), , Coulomb’s Law, 1 q 1q 2, , K = Dielectric constant or relative permittivity of the medium, Fm =, 4πε 0 K r 2, , (b), , Fm =, , (c), (d), , F0, [F0 – Force between point charges placed in vacuum], K, –1 –3 4 2, [ε0] = [M L T A ], Fe, =2.4 x 1039 [For electron–proton pair), Fg, , =1.2 x 1036 (For proton–proton pair), 2., (a), (b), , Electric field, →, , →, , E=, , F, q0, →, , Electric field due to a point charge: (i) E =, (ii), , 1 q ^, . r (if charge q is placed at the origin), 4πε 0 r 2, , → →, , →, 1 q( r − r 0), (if, charge, q, is, placed, at, some, point, having, position, vector, E=, r0), 4 πε0 → → 3, | r− r0|, , →, , (c), , [E] = [M1L1T–3A–1], , 3., (a), , Electric field on the axis of a uniformly charged ring, 1, qx, Eaxial =, (R = radius of the ring), 4πε 0 R 2 + x 2 3 / 2, , (b), , Ecentre = 0, , 4., (a), , Electric dipole, dipole moment p = q(2l) (where 2l = length of the dipole), 1, 2pr, Eaxial =, (r = distance of axial point w.r.t. centre of dipole), 4πε 0 r 2 − l 2 2, , (b), , ≅, , 1 2p, 4πε 0 r 3, , (, , ), , [, , ], , (if r >>l), , p, 1, 2, 4πε 0 r + l 2, , ≈, , 1 p, 4πε 0 r 3, , (c), , Eequat. =, , (d), (e), , (Eaxial/Eequat.) = 2/1, Dipole field at an arbitrary point (r, θ), 1 2p cos θ, 1 p sin θ, (i), Er =, ;, (ii), Eθ =, 3, 4πε 0, 4, πε, r, r3, 0, 1 p, 1 + 3 cos 2 θ, (iii), E = E 2r + E θ2 =, 4πε 0 r 3, , (f), , Dipole field component at (x, y, z) point, 1 3xz p, 1 3yz p, ; (ii) Ey =, ;, (i), Ex =, s, 4πε0 r 5, 4πε 0 r, , [, , ], , 3/ 2, , (if r >>l), , QUEST - Power Coaching for IITJEE, 1, Vigyan Vihar, Near Anand Vihar, Delhi – 92. Ph: 55270275, 55278916, E-16/289, Sector 8, Rohini, Delhi – 85, Ph: 55395439, 30911585, , 3
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Formula Booklet – Physics XII, , (f), , For n plates with alternate plates connected: C = (n–1) ε0A/d, , (g), , C=, , ε0A, , K1 K2 K3, , t1, t2, t3 , , , K + K + K , 2, 3 , 1, , t1, , t2, , t3, , Fig. 14, 23., , Spherical capacitor with inner sphere grounded, , (a), , C=, , (b), , Charge on inner sphere = –q1, while charge on outer sphere = +q2, , (c), 24., (a), , 4π ε 0 r1 r2, , (r2 − r1 ), , + 4 π ε0 r2, , r , Magnitude of charge on inner sphere: q1 = 1 q2, r2 , Insertion of dielectric slab, Battery remains connected when slab is introduced, (i), V’ = V; (ii) C’ = KC ; (iii) Q’ = KQ ; (iv) E’ = E; (v) U’ = KU, , (b), , Battery is disconnected after charging the capacitor and slab is introduced, (i), Q’ = Q; (ii) C’ = KC ; (iii) E’ = E/K; (iv) V’ = V/K; (v) U’ = U/K, , 25., (a), , Charge transfer, Common potential and energy loss when two capacitors are connected, C V + C 2 V2 q1 + q 2, =, Common potential: V = 1 1, C1 + C 2, C1 + C 2, , (b), , Charge transfer: ∆q =, , (c), 26., (a), (b), , C1C 2, (V1 − V2 ), C1 + C 2, , 1 C1C 2, (V1 − V2 )2, 2 C1 + C 2, Charging and discharging of a capacitor, –t/RC, ) ; (ii) V = V0 (1–e–t/RC); (iii) I = I0e–t/RC;, Charging: (i) q = q0 (1–e, (iv) I0 = V0/R, –t/RC, –t/RC, –t/RC, ; (ii) V = V0e, ; (iii) I = – I0e, Discharge: (i) q = q0e, (b), Time constant: τ = RC, , Energy loss: ∆U =, , Whether you think you can…, …or you think you can’t…, …either ways you are right!, QUEST - Power Coaching for IITJEE, 1, Vigyan Vihar, Near Anand Vihar, Delhi – 92. Ph: 55270275, 55278916, E-16/289, Sector 8, Rohini, Delhi – 85, Ph: 55395439, 30911585, , 9
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Formula Booklet – Physics XII, , 56., , Force and torque on a dipole in uniform magnetic field, (a), , →, , F = 0;, , (b), , →, , →, , →, , τ = M x B ; (c) τ MB sin θ, → →, , 57., , Potential energy of a dipole in magnetic field: U = − M . B = – MB cos θ, , 58., , Tangent galvanometer:, , (a), , B = BH tan θ;, , (b), , I = K tan θ,, , 59., , Vibration magnetometer: T = 2π, , where K =, , 2r B H, µ0n, I, M BH, , Nothing will happen, until, you generate the will to, make it happen!, , The most powerful weapon on earth is, human soul on fire!, , QUEST - Power Coaching for IITJEE, 1, Vigyan Vihar, Near Anand Vihar, Delhi – 92. Ph: 55270275, 55278916, E-16/289, Sector 8, Rohini, Delhi – 85, Ph: 55395439, 30911585, , 17
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Formula Booklet – Physics XII, , (d), 69., (a), 70., (a), (b), , M = K√(L1L2), , (if two coils of self inductances, L1 and L2 are over each other), , Energy stored in an inductor:, 1, 2, U = LI 2 ;, (b) uB = (B /2µ0), 2, Growth and decay of current in LR circuit, –t/, (for growth),, where τ = L/R, I = I0 (1–e τ), –t/τ, (for decay),, where τ = L/R, I = I0 e, , The heights by great men reached and kept…, …were not attained by sudden flight,, but they, while their companions slept…, …were toiling upwards in the night., , QUEST - Power Coaching for IITJEE, 1, Vigyan Vihar, Near Anand Vihar, Delhi – 92. Ph: 55270275, 55278916, E-16/289, Sector 8, Rohini, Delhi – 85, Ph: 55395439, 30911585, , 19
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Formula Booklet – Physics XII, , LIGHT, 1., , Intensity of light, , (a), , Spherical wave front: (i) I =, , (b), (c), 2., 3., 4., (a), , P, 2, , , (ii) amplitude ∝, , 1, r, 1, , 4 πr, 1, Cylindrical wave front: (i) I ∝ , (ii) amplitude ∝, r, r, Plane wave front: (i) I ∝ r0, (i) A ∝ r0, (i.e. I and A are both constants), , Law of reflection: Angle of incidence (i) = Angle of reflection (r), sin i, Law of reflection: Snell’s law: η =, sin r, Other relations, v, c, 2η1 = 1 and η =, v2, v, , (c), , λ air, or, η, η1 sin i = η2 sin r, , 5., , Electromagnetic nature of light, , (a), , The magnitude of E and B are related in vacuum by: B=, , (b), , (b), (c), , λmedium =, , →, , →, , vmedium =, , (Q νmedium = νair), , →, , →, , →, , v air, η, , E, C, , →, , E and B are such that E x B is always in the direction of propagation of wave, 1, 1, and v=, c=, µ0ε0, µε, , (d), , Refractive index, η = √(µr εr), (µr = µ/µ0 and εr = ε/ε0), For non–magnetic material, µr ≈ 1 and η = √(εr), , (e), , The EM wave propagating in the positive x–direction may be represented by:, Ey = E0 sin (kx – ωt) and Bz = B0 sin (kx – ωt), , 6., , Energy transmitted by an electromagnetic wave, , (a), , Energy density of electromagnetic wave is: u = ue + um =, , (b), , As for EM wave, B =, u=, , 1, 1 B2, ε0 E2 +, 2, 2 µ0, , E, 1, and = √ (µ0 ε0), hence, C, c, , 1, 1 E2 1, 1, ε 0E 2 +, = ε 0 E 2 + ε0 E 2 = ε 0E 2, 2, 2µ0 c 2, 2, 2, , (c), , Time averaged value of energy density is: u =, , 7., , Intensity of an electromagnetic wave, , (a), , In a medium: I = ε0 E02 v, , (b), , 1, , In free space: I = ε 0 E02 c, 2, , , , 8., , Pointing vector, , 1, 2, , 1, ε0 E 0 2, 2, , , , , QUEST - Power Coaching for IITJEE, 1, Vigyan Vihar, Near Anand Vihar, Delhi – 92. Ph: 55270275, 55278916, E-16/289, Sector 8, Rohini, Delhi – 85, Ph: 55395439, 30911585, , 23
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Formula Booklet – Physics XII, , (a), , →, , →, , →, , S = ExH=, 2, , → →, 1 → →, ( E x B ) = c 2ε 0 ( E x B ), µ0, 2, , (b), (c), (d), , S = cε0E = √(ε0/µ0)E, I = S and S = cu, Impedance of free space, Z = √ (µ0/ε0) ≅ 377 ohm, , 9., (a), , Pressure of EM Radiation, Change in momentum (normal incidence), , (b), , (c), , ∆p =, , U S A∆t, =, c, c, , ∆p =, , 2 U S A∆t, (reflector), =, c, c, , (absorber), , Pressure (normal incidence), P=, , S, =u, c, , (absorber), , P=, , 2S, = 2u, c, , (reflector), , Pressure for diffused radiation, P=, , 1S 1, = u, 3 c 3, , (absorber), , 2 S 2, = u, (reflector), 3 c 3, Quantum theory of light:, Energy of photon, E = hν = hc/λ, E h, =, Momentum, p =, c λ, Rest mass of photon = 0, 2, Mass equivalent of energy, m = (E/c ), P=, , 10., (a), (b), (c), (d), 11., (a), , Inclined mirrors: number of images, When 3600 is exactly divisible by θ0 and 3600/θ0 is an even integer then the number of images, formed is, n=, , (b), , 360, − 1 (whatever may be location of the object), θ, , 0, 0, When 360 is exactly divisible by θ and 360/θ) is an odd integer, then the number of images, formed is, , 360, − 1 (for symmetrical placement), θ, 360, (for unsymmetrical placement), =, θ, , n=, , QUEST - Power Coaching for IITJEE, 1, Vigyan Vihar, Near Anand Vihar, Delhi – 92. Ph: 55270275, 55278916, E-16/289, Sector 8, Rohini, Delhi – 85, Ph: 55395439, 30911585, , 24
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Formula Booklet – Physics XII, , (c), , 0, When 360 is not exactly divisible by θ, then the number of images formed is, = integer value of n, (where n = 360/θ), , 12., (a), , Reflection amplitude and intensity, When a ray of light is incident (with angle of incidence i ≈ 0) from a medium 1 of refractive index η1, to the plane surface of medium 2 of refractive index η2, then reflection amplitude is, η − η2, R= 1, η1 + η 2, , (b), , The ratio of the reflected intensity and the incident intensity is:, , 13., , Refraction of light, sin i, η=, ;, (b), sin r, 1, 1, η2 =, ;, (d), 2η1, , (a), (c), , 1, , η2 =, , I r η1 − η 2, =, I i η1 + η 2, , 2, , , ., , , sin θ1, ;, sin θ 2, , Cauchy’s relation: η = A +, , B, λ2, , 14., (a), (b), , Parallel slab, Angle of incidence, i = Angle of emergence, e, Lateral shift = [t sin (i – r)/cos r], , 15., , Composite block: η1 sin θ1 = η2 sin θ2 = η3 sin θ3 = constant, , 16., , Apparent depth, R t, a=, (where R = Real depth), =, η η, If there is an ink spot at the bottom of a glass slab, if appears to be raised by a distance, , (a), (b), , x=t–a=t–, (c), , 1, t, = t 1 − , where t is the thickness of the glass slab, η, η, , If a beaker is filled with immissible transparent liquids of refractive indices η1, η2, η3 and individual, depths t1, t2, t3 respectively, then the apparent depth of the beaker is:, t, t, t, a= 1 + 2 + 3, η1 η 2 η3, , 18., , 1, η, For a luminous body at a depth d inside a liquid: Radius of bright circular patch at the surface, d, r = d tan iC =, η2 − 1, , 19., 20., (a), (b), , For optical fibre: sin i ≤, Prism:, i+e=A+δ, r1 + r2 = A;, , 17., , (c), (d), , Total internal reflection: Critical angle iC is given by: sin iC =, , [(n, , 2, , ], , / n1 ) − 1, 2, , A + δm , sin , , 2 , At minimum deviation: i = e and r1 = r2. Hence, η =, A, sin , 2, For small angle prism: δ = (η–1) A, , QUEST - Power Coaching for IITJEE, 1, Vigyan Vihar, Near Anand Vihar, Delhi – 92. Ph: 55270275, 55278916, E-16/289, Sector 8, Rohini, Delhi – 85, Ph: 55395439, 30911585, , 25
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Formula Booklet – Physics XII, , (b), , (c), , η, , 1 2, 1, (η − 1) 2 2n, =, +, =2, + = R, F ƒl ƒ m, R R, , R, , Fig. 2, , η, , R1, , 1, 1 2, 1, 1 2, +, =, +, = 2(η − 1) , +, , F ƒl ƒ m, R1 R 2 R 2, , R2, , Fig. 3, 37., (a), , (b), , (c), , Optical Instruments, Astronomical Telescope:, ƒ0, ƒe, , (i), , For normal adjustment: m =, , (ii), , For near–point adjustment: m =, , ƒ0 , ƒ , 1 + e , ƒe , D, , Simple Microscope:, D, ƒ, , (i), , For normal adjustment: m =, , (ii), , For near–point adjustment = m = 1+, , D, ƒ, , Compound Microscope:, (i), (ii), , D, , ƒe , v , D, For near–point adjustment: m = 0 1 + , u0 ƒe , , For normal adjustment: m =, , v0, u0, , I do not ask to walk smooth paths, nor bear an easy load., I pray for strength and fortitude to climb rock-strewn road., Give me such courage I can scale the hardest peaks alone,, And transform every stumbling block into a stepping-stone., – Gail Brook Burkett, , QUEST - Power Coaching for IITJEE, 1, Vigyan Vihar, Near Anand Vihar, Delhi – 92. Ph: 55270275, 55278916, E-16/289, Sector 8, Rohini, Delhi – 85, Ph: 55395439, 30911585, , 29
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Formula Booklet – Physics XII, , MODERN PHYSICS, CATHODE RAYS AND POSITIVE RAYS, 1., (a), (b), , Cathode rays, Thomson identified cathode rays as an electron beam., 11, Specific charge q/m as measured by Thomson is: (q/m) = 1.759 x 10 Coulomb/Kg, , 2., (a), (b), , Positive rays, Positive rays were discovered by Goldstein., (q/m) for positive rays is much less than that of electrons., , 3., (a), (b), (c), (d), (e), (f), , Motion of charge particle through electric field (Field ⊥ to initial velocity), 2 2, The path is parabolic: y = (qE/2mu )x, The time spent in the electric field: t = (L/u), The y–component of velocity acquired: vy = (qEL/mu), 2, The angle at which particle emerges out tan θ = qEL/mu, The displacement in y-direction, when the particle emerges out of the field: y1=(qEL2/2mu2), 2, The displacement on the screen = Y = (qELD/mu ), , 4., (a), (b), (c), , Motion of charged particle through magnetic field (Field ⊥ to initial velocity), The path is circular with radius: r = (mu/qB), Momentum of the particle: p = qBr, The deflection on the screen: X = (qBLD/mu), , 5., (a), , Mass spectrographs, Thomson’s mass spectrograph, (i), Traces on the screen are parabolic in nature, (ii), Inner parabola corresponding to heavy M white outer parabola to light M., (iii) The upper portion of parabola is due to small v ions, while lower portion is due to high v ions., (iv) Only v = ∞ ions can reach vertex of parabola., 2, 2, (v) Equation of parabola: X = (B LD/E) (q/M) Y = K (q/M) Y, , (b), , Brain bridge mass spectrograph, (i), Velocity selector: v = (E/B), (ii), Other relations:, r = (Mv/qB’) = (ME/qBB’) (whre B’ is the magnetic field in dome);, d =2r; (d2 – d1) ∝ (M2–M1) ; M1 : M2 = d1 : d2 [where d1 and d2 are the, distances of traces 1 and 2 from the slit S2 of velocity selector]., , QUEST - Power Coaching for IITJEE, 1, Vigyan Vihar, Near Anand Vihar, Delhi – 92. Ph: 55270275, 55278916, E-16/289, Sector 8, Rohini, Delhi – 85, Ph: 55395439, 30911585, , 30
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Formula Booklet – Physics XII, , 1, 1, 1 , = RZ 2 2 − 2 , n, , λ, 1 n2 , , (i), , 2π 2 m k 2 e 4, ch, , 3, , = 1.097 x 10 7 m -1, , Series formula for H–atom, (i), , Lyman series:, , 1, 1 , , = R 1 − 2 , n = 2, 3, 4, ......∞, λ, n , , 1, 1 , 1, = R 2 − 2 , n = 3, 4, 5....∞, λ, 2, n, , , 1, 1 , 1, (iii) Paschen series: = R 2 − 2 , n = 4, 5, 6....∞, λ, n , 3, 1, 1 , 1, (iv) Brackett series:, = R 2 − 2 , n = 5, 6, 7….∞, λ, n , 4, 1, 1, 1, , , (v) P–fund series: = R 2 − 2 , n = 6, 7, 8 ….∞, λ, n , 5, Series limits (λmin), (i), Lyman: λmin = 912 Å, (ii), Balmer: λmin = 3645 Å, (iii), Paschen: λmin = 8201 Å, , (ii), , (j), , where R =, , Balmer series:, , 16., , Number of emission lines from excited state n = n(n–1)/2, , 17., (a), , Time period of revolution, Tn ∝ (n3/Z2) ;, (b) T1 = 1.5 x 10–16 sec ; (c) T1 : T2 : T3 = 1 : 8 : 27, , 18., , Frequency of revolution, , (a), , vn ∝ (Z2/n3);, , 19., (a), , Current due to orbital motion, 2 3, In ∝ (Z /n ) ; (b) I1 = 1 mA, , 20., (a), , Magnetic field at nucleus due to orbital motion of electron, Bn ∝ (Z3/n5) ; (b) B1 = 12.5 Tesla, , 21., (a), (b), , Magnetic moment:, Mn = (eL/2m) = (nhe/4πm);, –24, 2, M1 = (eh/4πm) = µB = Bohr Magneton = 9.27 x 10 Am, , 22., , Magnitude of angular momentum: L = √[l(l+1)] (h/2π), , 23., (a), , Angle of angular momentum vector from z–axis, cos θ = [ml√{l(l+1)}]; (b) the least angle is for ml = l i.e. cos θmin = [l/√{l(l+1})], , 24., , Magnitude of spin angular momentum, , (b) v1 = 6.6 x 1015 Hz ; (c) v1 : v2 : v3 = 1 :, , S = √[s (s+1)] (h/2π) =, , 25., (a), , 3, (h/2π), 2, , 1 1, :, 8 27, , X–RAYS, , Continuous X–rays:, vmax = (eV/h) ; (b) λmin = (hc/eV) = (12400/V) Å, , QUEST - Power Coaching for IITJEE, 1, Vigyan Vihar, Near Anand Vihar, Delhi – 92. Ph: 55270275, 55278916, E-16/289, Sector 8, Rohini, Delhi – 85, Ph: 55395439, 30911585, , 33
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Formula Booklet – Physics XII, , RADIOACTIVITY, 36., , Decay law: (a) (dN/dt) = – λN ; (b) N = N0 e λ ; (c) (N/N0) = (1/2), , 37., , Half life and decay constant:, (dN/dt ) ; (b) λT = log 2 or T = (0.693/λ), λ=−, e, N, , (a), , – t, , t/T, , or λ = (0.693/T), , 38., (a), , Mean life:, τ = (1/λ) or λ=(1/τ);, , 39., (a), (e), (g), , Activity:, – t, t/T, R = |dN/dt| ; (b) R = λN ; (c) R = R0e λ ; (d) (R/R0) = (1/2) ;, 10, 1 Becquerel = 1 dps ; (f) 1 curie = 1 ci = 3.7 x 10 dps;, 6, 6, 1 Rutherford = 1Rd = 10 Rd = 10 dps, , 40., , Decay of active mass:, , (a), , m = m0 e, , 41., , Radioactive equilibrium: NAλA = NBλB, , 42., , Decay constant for two channels: (a) λ = λ1 + λ2 ; (b) T =, , 43., , Gamma intensity absorption: (a) I = I0e, , –λt, , (b) T = 0.693τ or τ = 1.443 T, , ; (b) (m/m0) = (1/2)t/T ; (c) N =, , 6.023 x 10 23 x m, A, , –µx, , T1 T2, T1 + T2, , ; (b) Half value thickness, x1/2 = (0.693/µ), , NUCLEAR PHYSICS, 44., , Atomic mass unit: (a) 1 amu = 1.66 x 10–27 kg ; (b) 1 amu ≡ 1u ≡ 931.5 MeV, , 45., (a), , (c), , Properties of nucleus, 1/3, where R0 = 1.2 fermi, Radius: R = R0A, 4, 4, , , 3, 3, Volume: V αA, Q V = 3 πR = 3 π R 0 A , , , 17, 3, Density: ρ = 2.4 x 10 Kg/m (ρ is independent of A), , 46., , Mass defect: ∆M = Zmp + (A–Z) mn – M, , 47., 48., , Packing fraction: ƒ = ∆/A = mass excess per nucleon [∆ = –∆M = mass excess], 2, Binding energy: ∆E = BE = (∆M)c, , 49., (a), (b), (c), , Binding energy per ncuelon:, BEN = (BE/A);, BEN for Helium = 7.1 MeV/nucleon, BEN for Deuterium = 1.1 MeV/nucleon, , (b), , ELECTRONICS, 50., (a), (b), (c), , Richarson equation, 2 –W/KT, where A = 60 x 104 A/K2m2, J = AT e, 2 11600 W/T, –23, –5, J = AT e, [∴ K = Boltzmann’s constant = 1.38 x 10 J/K = 8.62 x 10 eV/K, Hence, 1/K = 11600 kelvin/eV], I = AT2Se–W/KT, , QUEST - Power Coaching for IITJEE, 1, Vigyan Vihar, Near Anand Vihar, Delhi – 92. Ph: 55270275, 55278916, E-16/289, Sector 8, Rohini, Delhi – 85, Ph: 55395439, 30911585, , 35
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Formula Booklet – Physics XII, , STUDY TIPS, •, , Combination of Subjects, Study a combination of subjects during a day i. e. after studying 2–3 hrs of mathematics shift to, any theoretical subject for 2 horrs. When we study a subject like math, a particular part of the, brain is working more than rest of the brain. When we shift to a theoretical subject, practically the, other part of the brain would become active and the part studying maths will go for rest., , •, , Revision, Always refresh your memory by revising the matter learned. At the end of the day you must revise, whatever you’ve learnt during that day (or revise the previous days work before starting studies, the next day). On an average brain is able to retain the newly learned information 80% only for 12, hours, after that the forgetting cycle begins. After this revision, now the brain is able to hold the, matter for 7 days. So next revision should be after 7 days (sundays could be kept for just, revision). This ways you will get rid of the problem of forgetting what you study and save a lot of, time in restudying that topic., , •, , Use All Your Senses, Whatever you read, try to convert that into picture and visualize it. Our eye memory is many times, stronger than our ear memory since the nerves connecting brain to eye are many times stronger, than nerves connecting brain to ear. So instead of trying to mug up by repeating it loudly try to, see it while reapeating (loudly or in your mind). This is applicable in theoritical subjects. Try to use, all your senses while learning a subject matter. On an average we remember 25% of what we, read, 35% of what we hear, 50% of what we say, 75% of what we see, 95% of what we read,, hear, say and see., , •, , Breathing and Relaxation, Take special care of your breathing. Deep breaths are very important for relaxing your mind and, hence in your concentration. Pranayam can do wonders to your concentration, relaxation and, sharpening your mined (by supplying oxygen to it). Aerobic exercises like skipping, jogging,, swimming and cycling are also very helpful., , The most powerful weapon on earth is, human soul on fire!, , QUEST - Power Coaching for IITJEE, 1, Vigyan Vihar, Near Anand Vihar, Delhi – 92. Ph: 55270275, 55278916, E-16/289, Sector 8, Rohini, Delhi – 85, Ph: 55395439, 30911585, , 37
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Formula Booklet – Physics XII, , Never say Quit!, When things go wrong, as they sometimes will,, When the road you are trudging seems all uphill., When the funds are low and debts are high,, And you want to smile, but you have to sigh., When care is pressing, you’re down a bit., Rest if you must, but never quit., Life is queer, with its twists and turns,, As every one of us, sometimes learns., And many a fellow turns about,, When he might have won, if he had stuck it out., Stick to your task, though the pace seems slow,, You may succeed with just another blow., Often the goal is nearer than,, It seems to a faint and faltering man., Often the struggler has given up., When he might have captured the victor’s cup., And he learned too late, when the night slipped down,, How close he was to the golden crown., Success is failure turned inside out,, The silver tints of the clouds of doubt., And you never can tell how close you are,, It may be near when it seems afar., So stick to the fight when you are hardest hit,, It’s when things seem worst, that you must never quit!, Edwin Markham, , QUEST - Power Coaching for IITJEE, 1, Vigyan Vihar, Near Anand Vihar, Delhi – 92. Ph: 55270275, 55278916, E-16/289, Sector 8, Rohini, Delhi – 85, Ph: 55395439, 30911585, , 38
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Formula Booklet – Physics XII, , Put Forth Your Best…, And You’ve Already Won!, The contest last for just moments,, though the training’s taken years., It was’nt the winning alone, that was worth the work and tears., The applause will be forgotten,, the prize will be misplaced., But the long hours of practise, will never be a waste., For in trying to win, you build a skill., You learn that winning depends on will., You never grow by how much you win,, you only grow by how much you put in., So any new challenge you’ve just begun,, Put forth your best and you’ve already won!, , QUEST - Power Coaching for IITJEE, 1, Vigyan Vihar, Near Anand Vihar, Delhi – 92. Ph: 55270275, 55278916, E-16/289, Sector 8, Rohini, Delhi – 85, Ph: 55395439, 30911585, , 39
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Formula Booklet – Physics XII, , You can…, if you think, you can!, If you think you are beaten, you are;, If you think that you dare not, you don’t;, If you’d like to win, but think you can’t,, It’s almost certain you won’t., If you think you’ll lose, you’ve lost,, For out in the world you find,, Success begins with a fellow’s will,, It’s all in the state of mind., Often many a race is lost,, Before even a step is run,, And many a coward fails,, Before even his work’s begun., Think big, and your deeds will grow, Think small, and you’ll fall behind., Think that you can, and you will,, It’s all in the state of mind., If you think you’re outclassed, you are;, You’ve got to think high to rise;, You’ve got to be sure of yourself,, Befoe you can ever win a prize., Life’s battles don’t always go,, To the stronger or faster man,, BUT SOONER OR LATER THE MAN WHO WINS,, IS THE ONE WHO THINKS HE CAN., –Edwin Markham, , QUEST - Power Coaching for IITJEE, 1, Vigyan Vihar, Near Anand Vihar, Delhi – 92. Ph: 55270275, 55278916, E-16/289, Sector 8, Rohini, Delhi – 85, Ph: 55395439, 30911585, , 40
