Q 1544280153.     Silver has a work function of `4.7 eV`. When

ultraviolet light of wavelength `100 nm` is

incident on it a potential of `7.7 V` is required to

stop the photoelectrons from reaching the

collector plate. How much potential will be

required to stop photoelectrons, when light of

wavelength `200 nm` is incident on it?

VIT 2014
A

`15.4 V`

B

`2.35 V`

C

`3.85 V`

D

`1.5 V`

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