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CUET · PHYSICS · PYQ PAPER 2023

Which of the following statements are correct?
A. The number of photoelectrons emitted per second is directly proportional to the intensity of incident radiation.
B. The minimum value of photoelectric current is called saturation current.
C. For a given frequency, stopping potential is independent of its intensity.
D. The stopping potential is same for all frequencies.

  1. A A and C only
  2. B A, C and D only
  3. C C and D only
  4. D B, C and D only
Verified Solution

Answer & Solution

Correct Answer

(A) A and C only

Step-by-step Solution

Detailed explanation

The number of photoelectrons depends on light intensity (more photons eject more electrons), while the stopping potential depends solely on the energy (frequency) of the photons, not how many there are. Saturation current is the maximum current reached, and stopping potential…
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