Physics, asked by Ashwani1111, 1 year ago

Plz fast answer question number 20

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Answered by kvnmurty

E = work function = 0.1 eV = 0.1 * 1.6 * 10^-19 J
threshold frequency = f Hz
h = Planck's constant = 6.62 * 10^-34 m^2 kg /s

E = h f

f = E / h = 2.414 * 10^13 Hz

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