During dispersion, violet light deviates most while red light deviates least.

Red and violet light have

In dispersion without deviation

Dispersion Without Deviation

In dispersion of light by a glass prism, yellow colour is deviated the least.

In dispersion of sunlight by a glass prism, which colour is deviated the least ?

Violet light is deviated most and red light is deviated the least on passing through the prism.

Assertion (A): The light of violet colour deviates the most and the light of red colour the least, while passing through a prim. Reason (R):The refractive index in highest for red light and lowest for the violet light.

Assertion:- When a white light is passed through a lens, Violet light is more deviated than red light. Reason:- wave- length for red light is greater than violet