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MHT CET202121 Sep 2021Morning ShiftPhysicsDual Nature of MatterActual

Light of frequency two times the threshold frequency is incident on photosensitive material. If the incident frequency is made ( 1 3 )^ rd and intensity is doubled, then the photoelectric current will

Options

  1. Aincrease
  2. Bdecrease
  3. Cbe zero
  4. Dbe halved

Correct answer

C. be zero

Step-by-step solution

Initial frequency v=2 v₀ Final frequency v^ = 2 v₀ 3 v^ is less than the threshold frequency v₀ Hence no photoelectrons will be emitted, and photoelectric current will be zero.

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