CUET · PHYSICS · PYQ PAPER 2025
igure given below shows variation of photocurrent with anode potential for different intensities of incident radiation. Some of the results obtained from the experiments are described below on the basis of the graph. Identify the correct results:
(A) The photoelectric current is higher for higher intensity of the incident radiation.
(B) The negative potential required to decrease the photocurrent at different intensities to zero is different.
(C) If the positive potential of the anode is increased beyond a certain value, the photocurrent does not increase for a given intensity.
(D) If the potential applied at the anode is zero, then the photocurrent is lower than the maximum value of current for the given intensity.
Choose the correct answer from the options given below:
- A (A), (B) and (C) only
- B (B), (C) and (D) only
- C (A), (C) and (D) only
- D (A) and (C) only
Answer & Solution
Correct Answer
(C) (A), (C) and (D) only
Step-by-step Solution
Detailed explanation
The correct option is (A), (C) and (D) only. (A) The photoelectric current is higher for higher intensity of the incident radiation. Correct. The graph shows three different saturation levels. Since \(I_3>I_2>I_1\), it confirms that higher intensity leads to a higher saturation…
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