If the length of an antenna is $150 \mathrm{~cm}$, the transmission frequency is ____ $\mathrm{MHz}$. (Speed…
If the length of an antenna is $150 \mathrm{~cm}$, the transmission frequency is ____ $\mathrm{MHz}$. (Speed of light in vacuum $=3 \times 10^8 \mathrm{~ms}^{-1}$)