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
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Photons with energy 5 e V are incident on a cathode C in a photoelectric cell. The maximum energy of emitted photoelectrons is 2 eV. When phtotons 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
`- 1 V`
B
`- 3 V`
C
`c, + 3V`
D
`+ 4 V`
Photons of energy 5 eV and incident on a cathode made of a photosensitive plate. The maximum kinetic energy of emitted photoelectrons is 3 eV . When photons of energy 8 eV fall on the same metal plate , the stopping potential of anode plate will be
A
`-7V`
B
`-6V`
C
3 V
D
`-3V`
Photons of energy 6 eV are incident on a metal surface whose work function is 4 eV . The minimum kinetic energy of the emitted photo - electrons will be
