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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^(1)nm`

Text Solution

Verified by Experts

The correct Answer is:
B
Given energy , E = `1 Me V = 10^6 eV `
Let `lamda` be the wavelength of a photon needed to remove a proton from the nucleus , bound with energy E. Then
`E=(hc)/lamda`
Here, hc = 1240 eV nm
`:. lamda=(hc)/E=(1240eV nm)/(10^6eV)=1.24xx10^(-3) nm `
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