Questions
A source of light is placed at a distance of 50 cm from a photo cell and the stopping potential is found to be . If the distance between the light source and photo cell is made 25 cm, the new stopping potential will be :
a
V0/2
b
V0
c
4V0
d
2V0
detailed solution
Correct option is B
By changing the position of source of light from photocell, there will be a change in the intensity of light falling on photocell.As stopping potential is independent of the intensity of the incident light, hence stopping potential remains samei.e., V0.Talk to our academic expert!
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