The data for Q. 75-76 are given below. Solve the problems and choose the correct answers.
Let $m(t)=\cos \left[\left(4 \pi \times 10^{3}\right) t\right]$ be the message signal and $\left.c(t)=5 \cos \left[2 \pi \times 10^{b}\right) t\right]$ be the carrier
$c(t)$ and $m(t)$ are used to generate an AM signal. The modulation index of the generated AM signal is $0.5.$ Then the quantity $\frac{\text { Total sideband power }}{\text { Carrier power }}$ is
- $\frac{1}{2}$
- $\frac{1}{4}$
- $\frac{1}{3}$
- $\frac{1}{8}$