Question

if a light of wavelength 4000 A 2 points
is incident on the metal
surface of work function 5 eV
will the electron be ejected or
not. *​

Answer 1

Answer:

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Answer 2

Answer:

no electron will be emitted

Explanation:

it is because by the formula

hc/¢. (¢::wave length)

12400/4000. (when wavelength is in angstrom)

=3.1

since the energy of incident light is less than the workfunction no photoelectron will be emmitted