Question

A source of light is placed at a distance of 1 m from a photocell and cut-off potential is found to be V₀. If the distance is doubled, the cut-off potential will be –

• A. 2V₀
• B. V₀/2
• C. V₀
• D. V₀/4

Answer 1

Answer: (C)

V₀

Answer 2

Stopping potential does not depend on intensity means number of photons.