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When a certain metal was irradiated wit...

When a certain metal was irradiated with light of frequency `3.2 xx 10^(16)s^(-1)` the photoelectrons emitted had twice the KE as did photoelectrons emitted when the same metal was irradiated with light of frequency`2.0 xx 10^(16)s^(-1)` . Calculate the thereshold frequency of the metal.

A

`1.2 xx 10^(16) Hz`

B

`8s xx 10^(15) Hz`

C

`8 xx 10^(16) Hz`

D

`1.2 xx 10^(15) Hz`

Text Solution

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The correct Answer is:
B
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