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Question: Answered & Verified by Expert
Radiations of two photon's energy, twice and ten times the work function of metal are incident on the metal surface successively. The ratio of maximum velocities of photoelectrons emitted in two cases is
PhysicsDual Nature of MatterNEET
Options:
  • A 1 : 2
  • B 1 : 3
  • C 1 : 4
  • D 1 : 1
Solution:
2433 Upvotes Verified Answer
The correct answer is: 1 : 3
12mv12=2ϕ0-ϕ0=ϕ0 and 12mv22=10ϕ0-ϕ0=9ϕ0

 v1v2=ϕ09ϕ0=13

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