JEE Main 2019 Physics question

PhysicsDual Nature of Matter and RadiationJEE Main 2019

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:

Answer: (B)

Solution

ΔV = 1240(1/300 − 1/400) ≈ 1.03 V.

Question ID VK-010390