Choose the correct statements from the following about photoelectric emission

For given emitter illuminated by light of a given frequency, the number of photoelectrons emitted per second is proportional to the intensity of incident light

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For every emitter there is a definite threshold frequency below which no photo electrons are emitted, no matter what the intensity of light is

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Above the threshold frequency, the maximum kinetic energy of photo electrons is proportional to the frequency of incident light

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The saturation value of the photoelectric current is independent of the intensity of incident light

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Solution

The correct options are
A For given emitter illuminated by light of a given frequency, the number of photoelectrons emitted per second is proportional to the intensity of incident light
B For every emitter there is a definite threshold frequency below which no photo electrons are emitted, no matter what the intensity of light is
C Above the threshold frequency, the maximum kinetic energy of photo electrons is proportional to the frequency of incident light
D : Saturation current $α$ Integrity of incident light
C : $K E = h V - ϕ$ ; $K E α V$
B : True. if $h V > ϕ$ , then no photoelectron is emitted.
A : No. of photon $↑$ , no. of photoelectron $↑$
[provided frequency of photon is greater than threshold frequency]

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Similar questions

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?

In photoelectric effect, electrons are emitted

(1) At a rate that is independent of emitter.

(2) At a rate that is proportional to the square of amplitude of incident radiation

(3) With a maximum velocity proportional to the frequency of incident radiation

(4) Only if frequency of the incident radiation is above a threshold value

Note: Please explain all the options...

Q. Assertion : Kinetic energy of photo electrons emitted by a photosensitive surface depends upon the intensity of incident photon.

Reason : The ejection of electrons from metallic surface is possible with frequency of incident photon below the threshold frequency.

Q. A photoelectric emitter has a threshold frequency

ϑ_{0}

. When light frequency

2 ϑ_{0}

is incident, the speed of photoelectrons is V. When the light of frequency

10 ϑ_{0}

. is incident the speed of photoelectrons will be:

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

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