Atoms And Nuclei Question 220

Question: 1 g of hydrogen is converted into 0.993 g of helium in a thermonuclear reaction. The energy released is [EAMCET (Med.) 1995; CPMT 1999]

Options:

A) $ 63\times 10^{7}J $

B) $ 63\times 10^{10}J $

C) $ 63\times 10^{14}J $

D) $ 63\times 10^{20}J $

Show Answer

Answer:

Correct Answer: B

Solution:

$ \Delta m=1-0.993=0.007\ gm $
$ \therefore E=(\Delta m)c^{2}=(0.007\times {{10}^{-3}}){{(3\times 10^{8})}^{2}} $ $ =63\times 10^{10}J $ .



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