Question

As the density of a medium increases, its refractive index ___.

• A. increases
• B. decreases
• C. remains same
• D. either increases or decreases

Answer 1

The correct option is A increases

As the density of the medium increases, number of particles per unit volume increases. Thus more light gets obstructed and the refractive index of the medium increases. Therefore as density increases, refractive index also increases.