Match List - I (Fundamental Experiment) with List - II (its conclusion) and select the correct option from the choices given :below the list

Option 1)

(A) - (i)    (B) - (iv)    (C) - (iii)
 

Option 2)

 (A) - (ii)   (B) - (iv)   (C) - (iii)

Option 3)

  (A) - (ii)    (B) - (i)    (C) - (iii)

 

Option 4)

(A) -(iv)   (B) - (iii)   (C) - (ii)

Answers (1)

As we learnt in

Frank Hertz Experiment -

Frank and Hertz had proposed that the 4.9 V characteristic of their experiments was due to ionization of mercury atoms by collisions with the flying electrons emitted at the cathode.

- wherein

 

 

Davisson Germer Experiment -

The energy of the incident beam of electrons can be varied by changing the applied voltage to the electron gun.

- wherein

Intensity of scattered beam of electrons is found to be maximum when angle of scattering is 50^{o} and the accelerating potential is 54 V

 

 

Photoelectric Effect -

It is the emission of electrons (photoelectron) when light strikes a surface.

- wherein

X-rays ,\gamma-rays ,UV -rays ,visible light and even infra red rays of suitable frequency.

 

 Frankck Hertz experiment - Discrete energy event of atom

Photo-electric effect - Particle nature of light

Davison - Germer experiment - Wave nature of light.

Correct answer is 3


Option 1)

(A) - (i)    (B) - (iv)    (C) - (iii)
 

This is an incorrect option.

Option 2)

 (A) - (ii)   (B) - (iv)   (C) - (iii)

This is an incorrect option.

Option 3)

  (A) - (ii)    (B) - (i)    (C) - (iii)

 

This is the correct option.

Option 4)

(A) -(iv)   (B) - (iii)   (C) - (ii)

This is an incorrect option.

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