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MHT CET 2024 (3 May, Shift 1) · Photoelectric Effect: Einstein's Equation

Photoelectric Effect: Einstein's Equation question from MHT CET 2024 (3 May, Shift 1)

Q58MHT CET 2024 · 3 MAY · SHIFT 1Easy

Photoelectric Effect: Einstein's Equation

When photons of energy hv fall on a photosensitive surface of work function $E_0$ , photoelectrons of maximum energy $k$ are emitted. If the frequency of radiation is doubled the maximum kinetic energy will be equal to ( $h =$ Planck's constant)

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Answer: (d)

$k = h\nu - E_0$ .
New: $k' = 2h\nu - E_0 = h\nu + (h\nu - E_0) = k + h\nu$
So the answer is (d) $k + h\nu$ .

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