If a radio receiver amplifies all frequency signals equally and well,it is said to have high . . . . . . .

The frequency range for commercial $FM$ radio broadcasting is .......

The maximum peak-to-peak voltage of an $AM$ wave is $24 \, mV$ and the minimum peak-to-peak voltage is $8 \, mV$. The modulation factor is.....$\%$

The antenna current of an $AM$ transmitter is $8 \text{ A}$ when only the carrier is sent,but it increases to $8.96 \text{ A}$ when the carrier is sinusoidally modulated. The percentage modulation is.......$\%$

For transmitting a signal of frequency $1000 \text{ kHz}$, the minimum length of the antenna is (in $\text{ m}$)

$A$ carrier wave of peak voltage $12 \,V$ is used to transmit a signal. If the modulation index is $75 \%$, the peak voltage of the modulating signal is (in $\,V$)