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SRMJEE 2019 Paper with key

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Question : 27

Total: 140

Radiation of two photons having energies twice and five times the work function of a metal are incident successively on the metal surface. Find out the ratio of maximum velocity of photoelectrons emitted in the two cases.

v1/v2=1/3
v1/v2=1/4
v1/v2=1
v1/v2=1/2

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