CUET · PHYSICS · PYQ PAPER 2025
Identify the correct statements.
(A) The energy (E) and momentum (p) of a photon are related by p = E/c.
(B) The electrons and photons of the same wavelength, possess the same momentum.
(C) One photon having energy more than work function can emit one photo electron.
(D) Photons do not carry momentum.
Choose the correct answer from the options given below :
- A (A), (C) and (D) only
- B (B), (C) and (D) only
- C (C) and (D) only
- D (A), (B) and (C) only
Answer & Solution
Correct Answer
(D) (A), (B) and (C) only
Step-by-step Solution
Detailed explanation
(A) \(p = E/c\). Correct. (B) \(p = h/\lambda\) for both. Correct. (C) \(1 \text{ photon} (E > \phi) \rightarrow 1 \text{ photoelectron}\). Correct. (D) Photons carry momentum. Incorrect. Correct statements: (A), (B), (C).
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