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Question

Assertion (A): Microwaves are better carries of signals than optical waves
Reason (R): Microwaves move faster than optical waves

A
Both A and R are true and R is correct explanation of A
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B
Both A and R are true and R is not the correct explanation of A
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C
A is true but R is false
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D
A is false but R is true
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Solution

The correct option is D A is false but R is true
A frequency of an optical wave is more than the microwave so optical waves are better canes of the signal, therefore, A is false. In medium (other than vacuum) speed of 0 microwaves 1A greater than optical wave hence R 1A true.
Ans. (D)

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