Question

If red light and violet light rays are of focal lengths FR and FV respectively, then which one of the following is true ?

(a) λR *≤*λV

(b) μR > μV

(c)μR =μV

(d)μR <μV

Answer 1

Correct option: *(d)*μR < μV

Explanation:

Red light less deviates than violet light.

So, FR > FV . Thus , μR < μV

Therefore, option (d) is correct.