Prism, Dispersion & Scattering
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): Refractive index of glass is higher than that of air.
Reason (R): Optical density of a medium is directly proportionate to its mass density which results in a proportionate refractive index.
In the light of the above statements, choose the most appropriate answer from the options given below:
Show answer and solution
Answer: (b)
- (A) is correct: glass () is optically denser than air ().
- (R) is wrong: optical density is not proportional to mass density (e.g. turpentine has higher but lower density than water).
- So the answer is (b).