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[" 93.Light of frequency "1.5" times the...

[" 93.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) four times "," (2) one-fourth "],[" (3) zero "," (4) doubled "]]

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