When a metal surface is illuminated by light of wavelength λ, the stopping potential is 8 ~V. When the same surface is illuminated by light of wavelength 3 λ, stopping potential is 2 ~V. The threshold wavelength for this surface is:

Dual Nature of Matter and Radiation: JEE Main 2024 Physics question

JEE Main 2024 · 31 Jan, Morning shift · Q6666

JEE Main 202431 Jan, Morning shiftPhysicsMediumDual Nature of Matter and Radiation146× since 2002

When a metal surface is illuminated by light of wavelength

\lambda

, the stopping potential is

8 \mathrm{~V}

. When the same surface is illuminated by light of wavelength

3 \lambda

, stopping potential is

2 \mathrm{~V}

. The threshold wavelength for this surface is:

JEE Main 2024 Dual Nature of Matter and Radiation Question with Solution (31 Jan Morning shift, Q6666) | JEE Arc