In the following questions, Statement of assertion (A) is followed by a statement of reason (R). 1. If both assertion and reason are true and the reason is the correct explanation of the assertion, then mark. 2. If both assertion and reason are true but the reason is not the correct explanation of the assertion, then mark. 3. If assertion is true statement but reason is false, then mark. 4. If both assertion and reason are false statements then mark.
Assertion: Microwave communication is preferred over optical communication. Reason: Microwaves provide large number of channels and band width compared to optical signals.A) 1
B) 2
C) 3
D) 4
Correct Answer: A
Solution :
Microwaves are electromagnetic waves with wavelength as longer than those of infrared light but relatively short from radio waves. The microwave range includes ultra high frequency \[(0.3-3\text{ }GHz)\], super high frequency \[(3-30\text{ }GHz)\]and extremely high frequency \[(30-300\text{ }GHz)\]signals. While optical communication is any form of telecommunication that uses light as the transmission medium. Hence, its channels and bandwidth are lesser than microwave communication.
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