What is the minimum length of antenna required to transmit a radio signal of frequency 10 MHz ?

9 m  9 cm 7.5 m  7.5 cm

7.5 m

\(\lambda\) = \(\frac{c}{\nu}\) c = 3 x 108 m/s ; \(\nu\) = 10 MHz length of antenna : = \(\frac{\lambda}{4}\) = 7.5 m