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Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A: EM waves used for optical communication have longer wavelengths than that of microwave, employed in Radar technology. Reason R: Infrared EM waves are more energetic than microwaves, (used in Radar). In the light of given statements, choose the correct answer from the options given below.

1. Both A and R are true but R is NOT the correct explanation of A
2. A is false but R is true
3. A is true but R is false
4. Both A and R are true and R is the correct explanation of A

Correct answer: Both A and R are true but R is NOT the correct explanation of A

Solution

Assertion A is correct because electromagnetic waves used in optical communication, such as visible light, have shorter wavelengths than microwaves used in radar technology. Reason R is also true, as infrared waves indeed have higher energy than microwaves, but it does not explain the relationship stated in Assertion A.

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