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Dual Nature of Radiation question

2024 · 31 Jan · Shift 1 · Q69

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JEE Main
Physics
Dual Nature of Radiation
2024 · 31 Jan · Shift 1 · Q69

Dual Nature of Radiation question

2024 · 31 Jan · Shift 1 · Q69

JEE MainPhysicsDual Nature of RadiationMCQ+4 / −1

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:

A
3 $\lambda$
B
9 $\lambda$
C
5 $\lambda$
D
4.5 $\lambda$

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