What is photoelectric effect ? Explain it on the basis of Plank’s quantum theory?
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The photoelectric effect appears when matter releases electrons upon vulnerability to electromagnetic radiation, such as a particle representing a quantum of light.
hν = W + E
h = Planck's constant
ν = the frequency of the incident photon
W= work function
an electron from the surface of a given metal: hν0
E = max. the kinetic energy of emitted electrons: 1/2 mv2
ν0 = approached frequency for the photoelectric effect
m = rest mass of the emitted electron
v = speed of the emitted electron
E = [(pc)2 + (mc2)2](1/2)
m = rest mass of the particle
c = velocity of light in a vacuum.
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