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I vs V - Varying Frequency

Kinetic energ...

Question

Kinetic energy with which the electrons are emitted from a metal surface due to photo-electric effect is

A

Dependent of the intensity of illumination

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B

Dependent on the frequency of light

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C

Inversely proportional to the intensity of illumination

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D

Directly proportional to the intensity of illumination

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Solution

The correct option is D Dependent on the frequency of light
Kinetic energy $=$ incident energy - work function
$= h ν - h ν_{0}$
So, K.E. is dependent on frequency of light.

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Kinetic energy with which the electrons are emitted from the metal surface due to Photoelectric effect is

1) independent of the intensity of illumination

2) independent of the frequency of light

3) inversely proportional to the intensity of illumination

4) directly proportional to the intensity of illumination

Q. Consider the following statements regarding the photoelectric effect experiment:
(I) Photo electrons are emitted as soon as the metal is exposed to light.
(II) There is a minimum frequency below which no photo-current is observed.
(III) The stopping potential is proportional to the frequency of light.
(IV) The photo-current varies linearly with the intensity of the light.
Which of the above statements indicate that light consists of quanta (photons) with energy proportional to frequency?

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