Atomic StructureHard

Question

Find the frequency of light that corresponds to photons of energy 5.0 × 10-5 erg

Options

A.7.5 × 10-21 sec-1
B.7.5 × 10-21 sec
C.7.5 × 1021 sec-1
D.7.5 × 1021 sec

Solution

Using E = hv, we get
v =

[∵ 1 J = 107 erg]
= 7.54 × 1021 sec-1

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