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

`1.2nm`

`1.2xx10^(-3)nm`

`1.2xx10^(-6) nm`

`.12xx10^(1)nm`

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The correct Answer is:

Energy `E=1MeV=10^(6)eV , hc=1240 eV nm`
`E=(hc)/lambda or lambda=(hc)/E=(1240 eVnm)/(10^(6)eV)=1.24xx10^(-3)nm`

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