calculate the kinetic energy of an electron emitted from a surface of a metal when radiation of frequency 5.5x10^17per second hits the metal. The work function of the metal is 3.62x10^-12 erg
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Answer:
v = 5.5 x 10^17 per second
KE = hv - hv0
= 6.626x 10^-34 - 3.62x 10^-12 x 5.5x10^17
= 3.643 x 10^-16 erg
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