If in a nuclear fission, piece of uranium of mass (5.0, g) i... | Physics | SolveeIt

Question

If in a nuclear fission, piece of uranium of mass $5.0\, g$ is lost, the energy obtained in $kWh$ is

$1.25 \times 10^7$

$2.25 \times 10^7$

$3.25 \times 10^7$

$0.25 \times 10^7$

Answer

$1.25 \times 10^7$

Explanation

Solution

As we know, energy $E = \Delta mc^2$
$=0.5 \times10^{-3} \times\left( 3 \times10^{8}\right)^{2}$
$= 4.5 \times10^{13}$
$E = \frac{4.5 \times10^{13}}{3.6 \times10^{6}}$
$= 1.25 \times10^{7} kWh$

Physics Question on Nuclear physics

Solution