Physics-Photoelectric Effect
NEET Physics Photoelectric Effect MCQ Question
Type: MCQ-diagram based-Hard-Class 12
Imagine a diagram showing a metal surface being illuminated by light, causing electrons to be emitted. Which factor determines whether electrons are emitted from the metal surface?
A
The frequency of the incident light exceeds the threshold frequency.
B
The intensity of the incident light exceeds a certain level.
C
The angle at which light strikes the metal surface.
D
The duration for which the light illuminates the surface.
Correct Answer
Option A
Detailed Explanation
Photoelectric emission occurs only if the frequency of the incident light exceeds the threshold frequency specific to the material, as stated in the NCERT context.
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