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Energy of a photon is 1.5 eV/atom. The wavelength of the photon is equal to

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a

8266nm

b

82.66nm

c

82660nm

d

826.6nm

answer is D.

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Detailed Solution

E=hCλ; E=1.5 ev/atom;  1.5×1.602×10-19J=6.625×10-34J×3×108m/sλ; λ=8.26×10-7m=826.6 nm;                         or λ(nm)=1240E(ev/atom)
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