Target Exam

CUET

Subject

Physics

Chapter

Dual Nature of Radiation and Matter

Question:

In the context of the Photoelectric effect, identify the statements which support quantum nature of light.

(A) The electric charge of photoelectrons is quantized
(B) The maximum kinetic energy of photoelectrons depends on the frequency of the incident light, but is independent of its intensity
(C) The photoelectric emission is an instantaneous process without any apparent time lag, even when the incident radiation is made exceedingly dim
(D) There is a minimum frequency of light below which no photoelectrons are emitted

Choose the correct answer from the options given below:

Options:

(A), (B) and (D) only

(A), (B), (C) and (D)

(B), (C) and (D) only

(B) and (D) only

Correct Answer:

(B), (C) and (D) only

Explanation:

The correct answer is Option (3) → (B), (C) and (D) only

(A) The electric charge of photoelectrons is quantized (Incorrect)
(B) The maximum kinetic energy of photoelectrons depends on the frequency of the incident light, but is independent of its intensity (Correct)
(C) The photoelectric emission is an instantaneous process without any apparent time lag, even when the incident radiation is made exceedingly dim (Correct)
(D) There is a minimum frequency of light below which no photoelectrons are emitted (Correct)