Photoelectric EffectHard
Question
If wavelength of incident light is changed from 4000 (Ao) to 3600 (Ao), then change in stopping potential will be-
Options
A.+ 0.34 V
B.- 0.54 V
C.+ 0.40 V
D.-0.40 V
Solution
eV1 = 
- φ0 .......(1)
eV1 =
- φ0 .......(2)
e(V2 - V1) = (3.44 - 3.1) eV
V2 - V1 = 0.34 volt
- φ0 .......(1)eV1 =
- φ0 .......(2)e(V2 - V1) = (3.44 - 3.1) eV
V2 - V1 = 0.34 volt
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