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: