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MHT CET20192 May 2019Morning ShiftPhysicsDual Nature of MatterActual

When photons of energy h v fall on metal plate of work function ‘ W 0 ’, photoelectrons of maximum kinetic energy, ‘ K ’ are ejected. If the frequency of the radiation is doubled, the maximum kinetic energy of the ejected photoelectrons will be

Options

  1. AK + W 0
  2. BK + h v
  3. CK
  4. D2 K

Correct answer

B. K + h v

Step-by-step solution

∵ K = h v - w o ….(1) Now K ' = h 2 v - w o …(2) 2 - 1 K ' - K = h v ⇒ K ' = K + h v

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