Question

A nuclear power reactor generates electric power of $100MW$. The number of fissions occurring per second is(If nuclear fuel used in the reactor is $U^{235}$)

• A. $3.125$ $\times {10}^{18}$/S
• B. $4.125$ $\times {10}^{18}$/S
• C. $5.125$$\times {10}^{18}$/S
• D. $6.125$ $\times {10}^{18}$/S

Answer 1

The correct option is A $3.125$ $\times {10}^{18}$/S

Power $={10}^{8}J/s$
Assuming $200MeV$ is released when U atom is destroyed.
$n=\frac{{10}^8}{200\times 1.6\times {10}^{-13}}$

$=3.125\times {10}^{18}$