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Question

Calculate the energy of photon of light having frequency 3×105 Hz. If wavelength of light is λ(0.50AA) , then calculate its energy.

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Solution

If frequency =3×105Hz
E=hv
=6.626×1034J/s1×3×105=19.878×1029J
if λ=0.5×1010
we know c=λv
v=3×108/0.5×1010=6×1018
E=hv
=6.626×1034J/s1×6×1018=3.97×1015J

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