The frequency of incident light falling on a photosensitive material is doubled, the K.E. of the emitted photoelectrons will be (a) unchanged. (b) two times its initial value. (c) more than two times its initial value. (d) less than two times its initial value.

Answer: (c). K = hν - φ. New: K' = 2hν - φ = 2K + φ Since φ > 0, K' > 2K. So the answer is (c) more than two times its initial value.

The frequency of incident light falling on a photosensitive material… | MHT CET 2024 (3 May, Shift 2)

Q57MHT CET 2024 · 3 MAY · SHIFT 2Easy

Photoelectric Effect: Einstein's Equation

The frequency of incident light falling on a photosensitive material is doubled, the K.E. of the emitted photoelectrons will be

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Answer: (c)

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