A beam of electromagnetic radiation of intensity
is comprised of wavelength,
. It falls normally on a metal (work function
) of surface area of 1 cm² . If one in 10³ photons ejects an electron, total number of electrons ejected in 1s is
.
, then
is:
Text Solution
Verified by ExpertsThe correct answer is:
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(11)
Energy of photon 
(so photoelectric effect will take place)
Joule
No. of photons falling per second

No. of photoelectron emitted per second

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