Physics-Photoelectric Effect

NEET Physics Photoelectric Effect MCQ Question

Type: MCQ-diagram based-Medium-Class 12

Consider a diagram showing a metal surface being irradiated with light of varying frequencies. Label the threshold frequency (f₀) where no electrons are emitted. Which metal property determines this threshold frequency?

Question diagram
A

Work function of the metal

B

Conductivity of the metal

C

Atomic mass of the metal

D

Density of the metal

Correct Answer

Option A

Detailed Explanation

The threshold frequency depends on the work function of the metal, which is the minimum energy needed to emit electrons, as described in the NCERT context.

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