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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

1.2nm

B

`1.2 xx10^(-3) nm`

C

`1.2 xx10^(-6) nm`

D

`1.2 xx10` nm

Text Solution

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