Q. In an amplitude modulation, a modulating signal having amplitude of $X$ V is superimposed with a carrier signal of amplitude $Y$ V in first case. Then, in second case, the same modulating signal is superimposed with different carrier signal of amplitude $2Y$ V. The ratio of modulation index in the two case respectively wil be :
A) $1\ :\ 2$
B) $1\ :\ 1$
C) $2\ :\ 1$
D) $4\ :\ 1$
Explanation
The correct answer is Option C: $2\ :\ 1$.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.