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The wavelength of a photon needed to rem...

The wavelength of a photon needed to remove a proton from a nucleus which is bound to the nucleus with 1MeV energy is nearly

A

`1.2 nm`

B

`1.2xx10^(-3) nm`

C

`1.2xx10^(-6) nm`

D

`1.2xx10 nm`

Text Solution

Verified by Experts

The correct Answer is:
B
Given in the question.
Energy of a photon,`E=1 MeV rArr =10^(6) eV`
Now, `hc=1240 eVm`, Now, `E=(hc)/lambda`
`rArr 1=(hc)/E=(1240eVnm)/(10^(6)eV)=1.24xx10^(-3) nm`
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