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NEET UG PHYSICS MCQ: DUAL NATURE OF RADIATION AND MATTER
1
Easy
1 of 1
Application
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In a photoelectric effect experiment a light of
frequency 1.5 times the threshold frequency is
made to fall on the surface of photosensitive
material. Now if the frequency is halved and
intensity is doubled, the number of photo electrons
emitted will be
frequency 1.5 times the threshold frequency is
made to fall on the surface of photosensitive
material. Now if the frequency is halved and
intensity is doubled, the number of photo electrons
emitted will be
View answer and explanation
Correct option: D
zero
Option D (zero) is correct because if the frequency is halved, it becomes less than the threshold frequency, and no photoelectrons are emitted.
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