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