Physics · 2021
JEE Main · 4 August 2021, Shift 2 · Q21
An Amplitude Modulated (AM) wave is expressed as C =5(1+0.3 cos 200 π t ) cos (1 × 10^8 π t ) volts. Its percentage modulation is \ \ \ \ %.
An Amplitude Modulated (AM) wave is expressed as $\displaystyle \mathrm{C}=5(1+0.3 \cos 200 \pi \mathrm{t}) \cos \left(1 \times 10^8 \pi \mathrm{t}\right)$ volts.
Its percentage modulation is \_\_\_\_%.
Official answer
30
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