Q. When the modulating frequency is doubled, the modulation index is halved and the modulating voltage remains constant, the modulation system is

A) Amplitude modulation
B) Phase modulation
C) Frequency modulation
D) All of the above
Explanation

The correct answer is Option C: Frequency modulation.

A detailed explanation for this question is being prepared.

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.