Question

describe the Laws of photoelectric effect:

Answer 1

$\underline{\mathfrak}{Answer}}$

✨$\bold{law\: of\: intensity}$
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For a given metal and frequency of incident radiations photoelectrons emitted is directly proportional to the intensity of the incid the number of ent light.

✨$\bold{law\: of\: frequency}$:
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For a given metal, there exists a certain minimum frequency of the incident radiation below which no emission of photoelectrons takes place. This minimum frequency is called threshold frequency.

✨$\bold{law\: of\: potential}$: :
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At a certain negative potential of collector, the photoelectric current becomes zero. This negative potential is called stopping potential.

✨The value of stopping potential for a given metal surface depends on the frequency of incident radiations, but is independent of the intensity of incident radiations.

✨ The photoelectric emission is an instantaneous process. The time lag between the incidence of radiations and emission of photoelectrons is 10-9 second.

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Answer 2

the above answer is correct by moderator