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Question
A nuclear reactor produces 3.2×1010 J of energy per second. How many fissions occur per second if each fission releases 200 MeV?
एक परमाणु रिएक्टर प्रति सेकंड 3.2×1010 जूल ऊर्जा उत्पन्न करता है। यदि प्रत्येक विखंडन 200 MeV उत्सर्जित करता है, तो प्रति सेकंड कितने विखंडन होंगे?
A.
1010
B.
1021
C.
1011
D.
1019
Answer ( Option B)

1021

Solution

Given,
Energy per fission = 200 MeV
Total energy per second =  3.204 × 10-11   Joules per fission
1 eV = 1.602 × 10-19 joules
200 MeV = 200 × 106 × 1.602 × 10-19  = 3.204 × 10-11J per fission
Fissions per second = Total energy per second/Energy per fission
Fissions per second = (3.2×1010)/(3.204×10−11)
Fissions per second = 1021

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