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MHT CET202014 Oct 2020Evening ShiftPhysicsDual Nature of MatterActual

When light of wavelength ' ' is incident on photosensitive surface, photons of power 'P' are emitted. The number of photons (n) emitted in 't' second is (h= Planck's constant, c = velocity of light in vacuum)

Options

  1. Ah C P t
  2. BP t h_ C
  3. CP htc
  4. Dh P t C

Correct answer

B. P t h_ C

Step-by-step solution

Energy of each photon = h c If n photons are emitted in time t then the energy emitted in time t is nhc aligned Power P &= Energy emitted per second &= nhc t n &= P t hc aligned

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