Question

11. The adjoining graph shows the variation of stopping potential Vo with
the frequency v of the incident radiation for the two photosensitive
metals A and B :
(1) Which of the metals has longer threshold wavelength? Give reason.
(m) Explain, giving reason, which metal gives out electrons, having
larger kinetic energy, for the same wavelength of the incident
radiation.
(UPB 2017, 14)
Ans. (i) voa<VOB - A > ROB
hc
11. In a photoelect
function is 3 eV
a graph showing
for phoron inter
Solution. M
photoelectrons
stopping pote
(15)
(ii) Ex
- hvo
2
For the same wavelength 2. ExA > Exe
The saturation
proportional to
[VOA < voB]​

Answer 1

Answer:

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