Dual Nature Of Light Question 186

Question: In a photoelectric experiment, the wavelength of the light incident on a metal is changed from 300 nm to 400 nm. The decrease in the stopping potential (in V) is $ ( \frac{hc}{e}=1240nm-V ) $

Options:

A) 1

B) 3

C) 4

D) 6

Show Answer

Answer:

Correct Answer: A