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प्रश्न
Define the following with reference to photoelectric effect :
(a) Threshold frequency (`f_0`)
(b) Stopping potential (`V_s`)
थोडक्यात उत्तर
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उत्तर
(a) The minimum frequency of incident radiation below which photoelectric emission is not possible for a photosensitive plate of a given material, is called threshold frequency (`f_0`) .
(b) The mimimum magnitude of negative potential of the collector plate relative to the emitter plate, for which the photocurrent becomes zero, is called stopping potential (`V_s`) .
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