Q143 / 180 · AIIMS 2018 (26 May) · Physics

In an amplitude modulated signal the maximum amplitude is 15 volt and minimum amplitude is 5 volt, then amplitude of modulating wave will be

  • Correct answer
    A
    $10 \mathrm{~V}$
  • B
    $5 \mathrm{~V}$
  • C
    $20 \mathrm{~V}$
  • D
    $30 \mathrm{~V}$

Solution

Maximum amplitude $=A_m+A_C=15$ minimum amplitude $=A_m-A_C=5$ So $2 A_{\mathrm{m}}=20 ; A_m=10 \mathrm{~V}$

Hence, the correct answer is option: 'A'.

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