NEET Physics Photoelectric Effect MCQ Question
What is the minimum frequency of light required to emit electrons from a metal surface in the photoelectric effect called?
Threshold frequency
Resonant frequency
Critical frequency
Emission frequency
Correct Answer
Detailed Explanation
The minimum frequency required for photoelectric emission is known as the threshold frequency, which is dependent on the work function of the material. This concept is highlighted in the NCERT context discussing the conditions necessary for electron emission.
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