Question

1. The equation for relativistic momentum is        (a) p = ?/mv                        &n

1. The equation for relativistic momentum is  

     (a) p = ?/mv                                                     

(c) p = mv

     (b) p = ?mv                                                      

2. The rest energy of the an object is

(d) None

     (a) E = mc2                                                                                     

(c)   E = mc2

     (b) E = mc2                                                                                    

3. When λmax T = Const , explains

(d)None

    (a) Wien displacement law                              

(c) Bohr’s rule              

    (b) Planck’s law                                                

(d) None

4. Planck’s assumption of quantized energy for n=2 is

     (a) En = h ƒ                                                                    

(c) En = 3hƒ

     (b) En = 2h ƒ                                                                  

(d) None
  1. Wavelength greater than ‘cutoff wavelength’ doesn’t result in the emission of photoelectrons.
    1. True         (c) False (b) Sometimes true      (d) None
  2. Energy consumed to the radiation of frequency 3 Hz is?  
    1. 2h                                                                                    (c)  h
    2. 3h                                                                                    (d) None
  3. ‘Compton scattering’ is based upon the  
    1. Proton concept                                                               (c) Photon concept
    2. Both                                                                                (d) None
  4. ‘de Broglie wavelength’ of a particle is
    1. h/mv       (c) hmv (b) mv/h       (d) None
  5. Nucleus was found by scattering experiments of which particles!
    1. Alpha                                                                               (c) Gamma
    2. Beta                                                                                 (d) None
  6. Bohr’s atomic model explains the electron jump of energy
    1. Ei xEf = h ƒ                                                                        (c) Ei – Ef = hƒ
    2. Ei /Ef = h ƒ                                                                        (d) None
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