Question

1. Malus' law explained by the equation (a) 1 = 1, cos? 20 (c) 1 = lo cos 40 (b) 1 = 1, cos (d) None 2. Brewster's law relates the polarizing angle (e.) to the index of refraction (n) as (a) n= sine, (c) n= cose, (b) n=tane, (d) None 3. f-number of a camera can be defined as (a) 2f/D (c) f/2D (b) f/D (d) None 4. The limiting angle of resolution (Omin) depends on the diameter, D, of the aperture as (a) 1.42 /D (c) 1.321/D (b) 1.221/D (d) None 5. The equation for relativistic momentum is (a) p = y/mv (c) p = mv (b) p = mv (d) None 6. When Imax T = Const, explains (a) Wien displacement law (c) Bohr's rule (b) Planck's law (d) None 7. Planck's assumption of quantized energy for n=2 is (a) E. = hf (c) En = 3hf (b) E = 2hf (d) None 8. Wavelength greater than 'cutoff wavelength' doesn't result in the emission of photoelectrons. (a) True (c) False (b) Sometimes true (d) None 9. Energy consumed to the radiation of frequency 1 Hz is? 'h' is the Planck's constant! (a) 2h (c) h (b) 3h (d) None 10. 'Compton scattering' is based upon the (a) Proton concept (c) Photon concept (b) Both (d) None 11. 'de Broglie wavelength of a particle is (a) Particle nature of matter (c) Wave nature of matter (b) Dual nature of matter (d) None 12. Bohr's atomic model explains the electron jump of energy (a) E XE = hf (c) E-EP = hf (b) E/E+ = hf (d) None

Answer 1

1. Malus low I = I. caso Io = Intensity of incident light Intensi ty of plane polarized light passing through any analyzer is proportional to square of cosine of angle. between polarizer and transmission axes of analyzer 6 correct (2 Brewster's law n Os O; n₂ tan Oo n. n + 6 correct Ox+0 = 90° 0; -06 t-nubber of camera is defined as ratio of focal length to the diameter of aperture 3 f 6 correct 4 Limit angle of resolution is defined as Omin = 1.222 where, 2= wavelength of light a = diameter of aperture CS Scanned with CamScakber correet

Relativistic momentum is defined by the product of clas momentum with relativistic factor P = Vp Pr = rmu where, r = o correct option. © The equation describe the wien displacement laico in Amara I T a max = constant T Correct Tamex = constant option 7 Plank's assumption for quantization of energy is given by En = n hf where, n = any integet number h = plank's constant f = frequency of light for n = 3 C correct option E = 3hf In photoelectric effect, emission of electrons from metal surface is only occured when frequency of incident light is greates than cutoff frequency (or wavelength should be great smaller that cutoff wavelength) CS - corred Scanned with a CamScanner

Energy consumed to the radiation of frequency E = ha of V= (H2 TE=h correct Compton scattering bated.on pheten concept » According to compton scattering, scattering of photon and by any charged particle gives decrease in chergy: correct the 5'de Broglie wavelength' in clicates, the dual properties of mattes. According to de Broglie, a moving matter shows coowe properties associated with it while in sest state, show the particle properties. 12.=h P x property of wave P = property of particle correct 2 Bohrs atomic model for transition of election from intial energy level (E;) to final energy level (E4) is Ej - Ep = hf give ☺ torrent Searned the CamScanner :