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Photons with energy 5 eV are incident on...

Photons with energy `5 eV` are incident on a cathode `C` in a photoelectric cell . The maximum energy of emitted photoelectrons is `2 eV`. When photons of energy `6 eV` are incident on `C` , no photoelectrons will reach the anode `A` , if the stopping potential of `A` relative to `C` is

A

(a)`3 V`

B

(b)`-3 V`

C

(c)`-1 V`

D

(d)`4 V`

Text Solution

Verified by Experts

The correct Answer is:
B
`phi=5eV-2eV=3eV`
`implies -V_(S)=(6eV-3eV)/(e) implies V_(S)= -3V`
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