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Question
1 g of hydrogen is converted into 0.993 g of helium in a thermonuclear reaction. The energy released
Options:
A .  63×107J
B .  63×1010J
C .  63×1014J
D .  63×1020J
Answer: Option B
:
B
Δm=10.993=0.007gm
E=Δmc2=0.007×103×(3×108)2=63×1010J

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