Science, asked by guna6382, 2 months ago

when a beam of visible light is incident on zine surface, no photo elections are emitted. By illuminating the surface with second beam, 4 phobelections are emitted, then the beam should of

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Answered by Anonymous

0

Answer:

threshold frequency

Answered by honey77777777

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Explanation:

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please make my answer as brainlist please

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