NEET2020Physics-Dual Nature of Radiation and Matter
NEET 2020 Physics Photoelectric Effect MCQ Question
Type: MCQ-conceptual-Medium-Class 12
Light of frequency 1.5 times the threshold frequency is incident on a photosensitive material. What will be the photoelectric current if the frequency is halved and intensity is doubled ?
A
one-fourth
B
zero
C
doubled
D
four times
Correct Answer
Option B
Detailed Explanation
If the frequency is halved, it becomes less than the threshold frequency, resulting in zero photoelectric current.
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