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Light of frequency `1.5` times the threshold frequency is incident on a photo-sensitive material. If the frequency is halved and the intensity is doub

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Light of frequency `1.5` times the threshold frequency is incident on a photo-sensitive material. If the frequency is halved and the intensity is doubled, the photoelectric current becomes
A. zero
B. half of its initial value
C. one fourth the initial value
D. three fourth the initial value
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Correct Answer - A
Under the given condition energy of photon becomes less than the work function of the metal.Hence photo-emission stops altogether.
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