Question

Voltage of modulating wave of $5\text{V}$ with $10\text{MHz}$ frequency, was superimposed on carrier wave of frequency $20\text{MHz}$ & $20\text{V}$, then the modulation index is given by $1/x$. Find $x$.

Answer 1

Given $V_m=5V$ and $V_c=20V$
$\mu \left(\text{modulation index}\right)=\frac{V_m}{V_c}=\frac{5}{20}=0.25$