Q. Which of the following four alternatives is not correct? We need modulation
A) To increase the selectivity
B) To reduce the time lag between transmission and reception of the information signal
C) To reduce the size of antenna
D) To reduce the fractional band width, that is the ratio of the signal band width to the centre frequency
Explanation
(b) Modulation does not change time log between transmission and reception.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.