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In an experiment on photoelectric emissi...

In an experiment on photoelectric emission from a metallic surface ,wavelength of incident light `2xx10^(-7)` m and stopping potential is 2.5V .The threshold frequency of the metal (in Hz) approximately
(Charge of electrons `e=1.6xx10^(-19)`C, Planck's constant ,`h=6.6xx10^(-34)J-s)`

A

`12xx10^(15)`

B

`9xx10^(15)`

C

`9xx10^(14)`

D

`12xx10^(13)`

Text Solution

Verified by Experts

The correct Answer is:
C
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