JEE Main 2015 · 4 Apr · Shift 1 · Physics Q29

PhysicsSingle correct+4 / -1Question 29 of 90

A signal of 5 kHz frequency is amplitude modulated on a carrier wave of frequency 2 MHz. The frequencies of the resultant signal is/are :

2 MHz only

2005 kHz, and 1995 kHz

2005 kHz, 2000 kHz and 1995 kHz

2000 kHz and 1995 kHz

Answer and worked solution

Official answer: C

AM gives the carrier and two side bands, $f_c\pm f_m$ : 2005 kHz, 2000 kHz and 1995 kHz.

JEE Main 2015 · 4 Apr · Shift 1, Physics question 29