Question

The orbital velocity is nearly $0.707$ times half of escape velocity

• A. True
• B. False

Answer 1

The correct option is A True

The value of orbital velocity = $V_{\circ }=\sqrt{gr}$ [where,g=acceleration due to gravity, r=Radius of the Earth]

The value of escape velocity $V_e=\sqrt{2gr}$

$\therefore \frac{V_{\circ }}{V_e}=\frac{1}{\sqrt{2}}=0.707$