Home Physics Atomic and Nuclear Physics Atomic Structure The frequency and intensity of a light sourc…
Physics Atomic and Nuclear Physics Atomic Structure MCQ (Single Correct)

The frequency and intensity of a light source are both doubled. Consider the following statements.

(i) The saturation photocurrent remains almost the same.

(ii) The maximum kinetic energy of the photoelectrons is doubled.

A
Both (i) and (ii) are true
B
(i) is true but (ii) is false
C
(i) is false but (ii) is true
D
both (i) and (ii) are false

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Text Solution

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The correct answer is:
B

Since frequency of light source is double, the energy carried by each photon will be doubled.

Hence intensity will be doubled even if number of photons remains constant. Hence saturation current is constant. Since frequency is doubled, maximum KE increases but it is not doubled.

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