CUET · PHYSICS · PYQ PAPER 2023
Light of frequency \( \nu \) falls on a metal whose work function is \( h\nu_0 \). Choose the most appropriate condition from the following under which the photoelectric effect will take place.
- A \( \nu \ge \nu_0 \)
- B \( \nu < \nu_0 \)
- C \( \nu > 200\nu_0 \)
- D \( \nu < 0.5\nu_0 \)
Answer & Solution
Correct Answer
(A) \( \nu \ge \nu_0 \)
Step-by-step Solution
Detailed explanation
For the photoelectric effect to occur, the energy of the incident photon ( \(h v\) ) must be greater than or equal to the metal's work function \(\left(h v_0\right)\). Therefore, the incident frequency \(\nu\) must reach or exceed the threshold frequency \(v_0\) to eject an…
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