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प्रश्न
Define stopping potential.
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उत्तर
The minimum negative potential given to the anode of a photo-cell for which the photoelectric current becomes zero is called stopping potential.
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संबंधित प्रश्न
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 `"V"/4`. The threshold wavelength for the metallic surface is
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