Rankers Physics

Photoelectric Effects and deBroglie Equation: Practice Problem & Solution

45. Which of the following statement is correct? (1997)
The photocurrent increases with intensity or light
The stopping potential increases with increase of incident light
The current in photocell increases with increasing frequency
The photo current is proportional to the applied voltage.

Solution Explained:

To solve this problem, we apply the core principles of Photoelectric Effects and deBroglie Equation. Understanding the underlying formula is key to arriving at the correct answer below:

The photoelectric current is directly proportional to the intensity of incident light, provided the frequency of incident light is greater than the threshold frequency.

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