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NEET 2002 (AIPMT) · Photoelectric Effect: Einstein's Equation

Photoelectric Effect: Einstein's Equation question from NEET 2002 (AIPMT)

Q167NEET 2002 · AIPMTEasy

Photoelectric Effect: Einstein's Equation

When ultraviolet rays incident on metal plate then photoelectric effect does not occur, it occurs by incidence of

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Answer: (b)

If UV photons do not have enough energy, a higher-frequency radiation is needed.
X-rays have higher frequency than UV; infrared, radio and microwaves are lower.
So the answer is (b) X-rays.

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