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The threshold frequency for certain meta...

The threshold frequency for certain metal is `3.3 xx 10^14 Hz.` If light of frequency `8.2 xx 10^14 Hz` is incident on the metal, the cut-off voltage of the photoelectric current will be

A

4.9 V

B

3.0 V

C

2.0 V

D

1.0 V

Text Solution

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The correct Answer is:
C
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