. The threshold frequency for a metallic surface corresponds to an energy
of 6.2 eV and the stopping potential for a radiation incident on this surface is 5 V. The incident radiation lies in
A. X-ray region
B. ultra-violet region
C. infra-red region
D. visible region
Best Answer
Ans: B
Sol: Given that the threshold frequency for metal surface corresponds to an energy = 6.2 eV
Stopping potential for the radiation incident on it is, Vo = 5V
We know that in the photoelectric experiment
.PNG)
Which is under the ultraviolet region.
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