MCQOPTIONS
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MCQOPTIONS
| 1. |
A 300 Hz sound wave of intensity 20 dB is transmitted by a 1500 kHz radio wave by frequency modulation. It is seen that instantaneous frequency varies between 1500.2 kHz and 1499.8 kHz, 300 times a second. If the intensity of sound wave is 100 dB. |
| A. | The instantaneous frequency variations will be between 1500.2 and 1499.8 kHz, 1500 times a second |
| B. | The instantaneous frequency variations will be between 1501 and 1499 kHz, 1500 times a second |
| C. | The instantaneous frequency variations will be between 1501 and 1499 kHz, 300 times a second |
| D. | The instantaneous frequency variations will be between 1501 and 1499 kHz, 60 times a second |
| Answer» D. The instantaneous frequency variations will be between 1501 and 1499 kHz, 60 times a second | |