question_answer

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 is close to [JEE Main 11-Jan-2019 Evening]

A) 2.0 V

B) 0.5 V

C) 1.0 V

D) 1.5 V

Correct Answer: C

Solution :

[c]