AIIMS 2003 Physics Microwave Communication Assertion Reason Question
Assertion : Microwave communication is preferred over optical communication.
Reason : Microwaves provide large number of channels and bandwidth compared to optical signals.
Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
Assertion is true but Reason is false.
Both Assertion and Reason are false.
Correct Answer
Detailed Explanation
The quality of a communication system is determined by its information carrying capacity. The information carrying capacity is directly proportional to its bandwidth. The wider the bandwidth, the greater its information carrying capacity. As the light frequencies used in optical fibre systems is much larger than the highest frequency microwave transmissions, so the bandwidth in case of optical communication systems is much larger than that in microwave communications. The bandwidth of the optical fibre systems is quite suitable for the present day communication needs and also for the future. That's why optical communication is preferred over microwave communication.
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