NEET Physics Communication System MCQs

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Communication Systems

A satellite communication link operates at a frequency of 6 GHz. The transmitting and receiving antennas have gains of 40 dB and 30 dB, respectively. The distance between the satellite and the receiver is 40,000 km. If the transmitter power is 1 kW, calculate the received power, assuming free space propagation. (Take the speed of light as $3 imes 10^8$ m/s)