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Question

1 g of hydrogen is converted into 0.993 g of helium in a thermonuclear reaction. The energy released

A
63×107J
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B
63×1010J
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C
63×1014J
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D
63×1020J
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Solution

The correct option is B 63×1010J
Δm=10.993=0.007gm
E=Δmc2=0.007×103×(3×108)2=63×1010J

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