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The wavelength of a 1 keV photon is 1.24...

The wavelength of a `1 keV` photon is `1.24 xx 10^(-9)`m. What is the frequency of `1 MeV photon`?

A

`1.24 xx10^(15) Hz`

B

`2.4 xx10^(20) Hz`

C

`1.24 xx10^(18) Hz`

D

`2.4 xx10^(23) Hz`

Text Solution

Verified by Experts

The correct Answer is:
B
`E-=hvimpliesv=E/h=(1xx10^6 xx1.6 xx10^(-19))/(6.6xx10^(-34))`
`implies v = 2.4 xx10^(20) Hz`
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