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NTA Abhyas 2020
Exam
NTA Abhyas
Year
2020
Subject
Physics
Chapter
Nuclear Physics

NTA Abhyas 2020 · Physics · Nuclear Physics

If in nuclear fission, a piece of uranium of mass 6.0g is lost, the...

If in nuclear fission, a piece of uranium of mass 6.0g\text{6.0}g is lost, the energy obtained (in kWhkWh) is n×107n \times {10}^{7}. Find the value of nn.

Correct answer

1.25

Step-by-step solution

E=Δmc2E = {\Delta mc}^{2}

=0.5×10−3×(3×108)2= 0.5 \times {10}^{- 3} \times {\left(3 \times {10}^{8}\right)}^{2}

=4.5×1013= 4.5 \times {10}^{13}

E=4.5×10133.6×106E = \dfrac{4 .5 \times {10}^{13}}{3 .6 \times {10}^{6}}

=1.25×107kWh= 1 .25 \times {10}^{7}kWh
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