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The threshold frequency for a photosensi...

The threshold frequency for a photosensitive metal is `3.3 xx 10^(14) Hz`. If a light of frequency `8.2 xx 10^(14)Hz` is incident on this metal, the cut-off voltage for the photoelectron emission is nearly.

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The threshold frequency for a certain metal is 3.3 xx 10^(14) Hz. If light of frequency 8.2 xx 10^(14) Hz is incident on the metal, predict the cut - off voltage for the photoelectric emission.

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