MHT CET 2022 Physics question

PhysicsDual Nature of Matter and RadiationMHT CET 2022

Photoelectric emission takes place from a certain metal at threshold frequency 'v'. If the radiation of frequency '2v' is incident on the metal plate, the maximum velocity of the emitted photoelectron will be (m = mass of electron, h = Planck's constant)

Answer: (A)

Solution

Einstein's photoelectric equation: with work function (threshold frequency ). With :

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Question ID VK-095718