CUET Preparation Today
If the rate of emission of energy from a star is 2.7 × 1036 J/sec, the rate of loss of mass in the star will be - |
3 × 1018 kg/sec 3 × 1019 kg/sec 3 × 1020 kg/sec 3 × 1021 kg/sec |
3 × 1019 kg/sec |
$E=mc^2$ $∴m=\frac{E}{c^2}=\frac{2.7×10^{36}}{9×10^{16}}=\frac{27×10^{35}}{9×10^{16}}=3×10^{19}kg/sec$ |
