Question

Following questions consist of two statements –

Assertion (A) and Reason (R).
Answer these questions selecting the appropriate option given below:

(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.

Assertion(A) : Refractive index has no units.
Reason (R) : The refractive index is a ratio of two similar quantities.​

Answer 1

Answer:

b option is correct

Explanation:

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Answer 2

(b) Both A and R are true but R is not the correct explanation of A.

Explanation:

• The reason for considering option (b) as correct is that, the given assertion as well as the reason are true.
• The refractive index is a quantity which has not unit.
• Refractive index compares the speed of light in different medium that is in air and water.
• As it is comparing the speed of light in both medium, the reason is also true.
• The reason and assertion are two different concept. The reason is not explaining about the assertion.
• Hence the correct option is (b) Both A and R are true but R is not the correct explanation of A.