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The masses of neutron and proton are 1.0...

The masses of neutron and proton are `1.0087` a.m.u. and `1.0073` a.m.u. respectively. If the neutrons and protons combine to form a helium nucleus (alpha particle) of mass `4.0015`a.m.u. The binding energy of the helium nucleus will be `(1 a.m.u. = 931 MeV)`.

A

28.4meV

B

20.8 MeV

C

27.3 MeV

D

14.2 MeV

Text Solution

Verified by Experts

The correct Answer is:
A
`BE =Deltamc^(2)=Deltam 931MeV`
`[Zm_(P)+(A-Z)m_(n)-m_(N)]xx931`
`=[2(1.0087+1.0073)-4.00015]xx931`
= 28.4 Me V
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