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The threshold frequency for photo electr...

The threshold frequency for photo electric effect for a metal surface is found to be `4.8xx10^(16)` Hz. The stopping potential required when the metal is irradiated by radiation of frequency `5.6xx10^(16)` Hz is (taking `h=6.6xx10^(-34)Js` and `c=1.6xx10^(-19)C` )

A

22.4 V

B

33 V

C

66 V

D

198 V

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The correct Answer is:
B
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