Question

Binding energy of satellite is $4\times {10}^{8}J$. Its PE is

• A. $-4\times {10}^{8}J$
• B. $-8\times {10}^{8}J$
• C. $8\times {10}^{8}J$
• D. $4\times {10}^{8}J$

Answer 1

Answer: (B)

$-8\times {10}^{8}J$

Binding energy $E_{B}2=-4\times {10}^{8}J$ (since binding energy of satellite is negative)
$\therefore$ Potential energy of satellite $P.E=2E_B$
$P.E=2\times (-4\times {10}^8)=-8\times {10}^{8}J$