Nuclei - Result Question 41
42. The mass of proton is $1.0073 u$ and that of neutron is $1.0087 u$ ( $u=$ atomic mass unit). The binding energy of $ _2^{4} He$ is
[2003]
(a) $0.061 u$
(b) $0.0305 j$
(c) $0.0305 erg$
(d) $28.4 MeV$
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Answer:
Correct Answer: 42. (d)
Solution:
- (d) $\Delta m=(2 \times 1.0074+2 \times 1.0087-4.0015)$
$ =0.0307 $
$E=(\Delta m) \times 931 MeV=0.0307 \times 931=28.5 MeV$
