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Communication — Physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 SciencePhysicsCommunication1 Mark
MCQ
In the case of amplitude modulation to avoid distortion the modulation index $(\mu)$ should be.
  • ✓
    $\mu \leq 1$
  • B
    $\mu \geq 1$
  • C
    $\mu=2$
  • D
    $\mu=0$
✓

Answer

Correct option: A.
$\mu \leq 1$
a
$\mu=\frac{ A _{ m }}{ A _{ c }}$

$\mu \leq 1$ to avoid distortion

because $\mu>1$ will result in interference between career frequency \& message frequency.

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