JEE Main202225 Jul 2022Evening ShiftPhysicsCommunication SystemActual
In AM modulation, a signal is modulated on a carrier wave such that maximum and minimum amplitude are found to be 6 V and 2 V respectively. The modulation index is
Options
- A100 %
- B80 %
- C60 %
- D50 %
Correct answer
D. 50 %
Step-by-step solution
Given here, V max = 6   V and V min = 2   V Now, modulation index = V max - V min V max + V min . × 100 % = 6 - 2 6 + 2 × 100 % = 50 %