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Assertion: Only microwaves are used in r...

Assertion: Only microwaves are used in radar.
Reason: Because microwaves have very small wavelength.

A

If both assertion and reason are true and reason is the correct explanation of assertion.

B

If both assertion and reasion are true but reason is not the correct explanation of assertion.

C

If assertion is true but reasion is false.

D

If assertion and reason both are false.

Text Solution

Verified by Experts

The correct Answer is:
a
In a radar, a beam signal is needed in particular direction which is possible if wavelength of wave is very small. Since the wavelength of microwaves is a few millimeter, hence they are used in radar.
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