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MHT CET 2026 (13 May, Shift 1) · Photoelectric Effect: Einstein's Equation

Photoelectric Effect: Einstein's Equation question from MHT CET 2026 (13 May, Shift 1)

Q9MHT CET 2026 · 13 MAY · SHIFT 1Easy

Photoelectric Effect: Einstein's Equation

The frequency of the incident light falling on a photosensitive metal plate is doubled, the kinetic energy of the emitted photoelectrons is

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Answer: (c)

$K = h\nu - \phi$ .
New: $K' = 2h\nu - \phi = 2(h\nu - \phi) + \phi = 2K + \phi$
Since $\phi > 0$ , $K' > 2K$ .
So the answer is (c) more than double.

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