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NEET 2022 (Phase 2) · Photoelectric Effect: Einstein's Equation

Photoelectric Effect: Einstein's Equation question from NEET 2022 (Phase 2)

Q90NEET 2022 · PHASE 2Easy

Photoelectric Effect: Einstein's Equation

The threshold frequency of a photoelectric metal is v0. If light of frequency 4v0 is incident on this metal, then the maximum kinetic energy of emitted electrons will be:

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Answer: (d)

$K_{max} = h\nu - h\nu_0$
$K_{max} = h(4\nu_0) - h\nu_0 = 3h\nu_0$
So the answer is (d) $3h\nu_0$ .

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