Q. If $E_{c} = 20\sin 10^{5}\ \pi t\ $and$\ E_{m} = 10\sin 400\ \pi t$ are carrier and modulating signals respectively, he modulation index is
A) 56 %
B) 30 %
C) 50 %
D) 48 %
Explanation
(c) $m = \frac{E_{m}}{E_{c}} = 50\%$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.