Question

To double the covering range of a TV transmitter tower, its height should be made

• A. 2 times
• B. 4 times
• C. $\sqrt{2}$ times
• D. 8 times

Answer 1

Answer: (B)

4 times

Answer 2

as $d=\sqrt{2 h R}$ $d$: Covering range $h$: Height of tower $R$: Radius of earth So $d \propto \sqrt{h}$ To double the covering range its height should be made $4$ times.