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Class 12 NEET Physics Dual Nature of Matter and Radiation

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Question : 25

Total: 107

When a metallic surface is illuminated with radiation of wavelength λ′ the stopping potential is V. If the same surface is illuminated with radiation of wavelength 2λ, the stopping potential is

. The threshold wavelength for the metallic surface is :

3λ
4λ
5λ
5
2
λ

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