Question

Fill in the blank.
_______ temperature, ______ refractive index and resulting in increasing angle of deviation.

• A. increasing, decreasing
• B. increasing, increasing
• C. decreasing, decreasing
• D. decreasing, increasing

Answer 1

The correct option is D decreasing, increasing

Refraction is defined as the bending of light when it travels obliquely from one transparent medium to another.

The angle of deviation is the angle between the incident light and the refracted. Greater refractive index means greater refraction, hence greater angle of deviation.

By decreasing temperature, the density of medium increases, which increases the refractive index.