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NEET-XII-Physics
Previous Year Paper year:2020
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divided into subjects - page 2
Qstn# 157
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#157
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 ?
(1) doubled
(2) four times
(3) one-fourth
(4) zero
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