CUET · PHYSICS · PYQ PAPER 2025
For a photoelectric effect:
(A) the photoelectric current is directly proportional to the intensity of the incident radiation.
(B) the maximum kinetic energy of the emitted photoelectrons increases linearly with the frequency of the incident radiation.
(C) for a given frequency of the incident radiation, the stopping potential increases linearly with the intensity of the incident radiation.
(D) the photoelectric emission is an instantaneous process without any apparent time lag.
Choose the correct answer from the options given below:
- A (A), (B) and (D) only
- B (A), (B) and (C) only
- C (A), (B), (C) and (D)
- D (B), (C) and (D) only
Answer & Solution
Correct Answer
(A) (A), (B) and (D) only
Step-by-step Solution
Detailed explanation
Statement (A) is correct: Photoelectric current depends on the number of photoelectrons emitted per second, which is directly proportional to the intensity of incident light. Statement (B) is correct: According to Einstein's photoelectric equation, \(K_{\max }=h \nu-\Phi_0\).…
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