Two separate monochromatic light beams A and B of same intensity are falling on a unit area of metallic surface. Their wavelength are lambdaA and lambdaB respectively. Assuming that all incident light is used in ejecting photoelectrons, the ratio of number of photoelectrons from beam A to that from B is
a) (lambdaA/lambdaB)2
b) lambdaA/ lambdaB
c) lambdaB/lambdaA
d) 1

As intensity is same ratio of photoelectrons will be 1

  • -1
No of photoelectrons emitted only depends on intensity of incident radiation.

Since intensity is constant, number will also be same.
  • -4
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