NEET Physics Photoelectric Effect MCQ Question
Which combinations of statements about the photoelectric effect are correct?
I. The stopping potential depends on the frequency of incident light. II. No photoelectric emission occurs below the threshold frequency, regardless of light intensity.
I. The intensity of light affects the maximum kinetic energy of emitted electrons. II. Alkali metals can emit electrons with visible light.
I. The photoelectric current is independent of the type of emitter material. II. Ultraviolet light can emit electrons from all metals.
I. The threshold frequency is constant for all materials. II. The photoelectric effect can be explained by classical wave theory.
Correct Answer
Detailed Explanation
Statement I is correct because the stopping potential indeed depends on the frequency of the incident light. Statement II is also correct as no photoelectric emission occurs below the threshold frequency, regardless of intensity, as stated in the NCERT context.
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