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Wavelength of a 1 ke V photon is 1.24 xx...

Wavelength of a `1 ke V` photon is `1.24 xx 10^(-9) m`. What is the frequency of ` 1 Me V` photon ?

A

`1.24 xx 10^(15)` Hz

B

`2.4 xx 10^(15)` Hz

C

`1.24 xx 10^(20)` Hz

D

`2.4 xx 10^(20)` Hz

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The correct Answer is:
D
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