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MHT CET20226 Aug 2022Morning ShiftPhysicsDual Nature of MatterActual

In the case of photoelectric emission from a certain metal, the cutoff frequency is v . If radiation of frequency 2 v is incident on the metal plate, the maximum possible velocity of the emitted electrons will be ( m= mass of electron)

Options

  1. A2 h v m
  2. Bh v 2 m
  3. C2 h v m
  4. Dh v m

Correct answer

C. 2 h v m

Step-by-step solution

K E .=E- 1 2 m v_ ^2=h(2 v)-h vv_ = 2 h v m

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