Red light is incident on a converging lens of focal length `f`. State with reason hoe `f` will change if red light is replaced by blue light.

Violet light is incident on a converging lens of focal length f. State with reasons how focal length of the lens will change, if the violet light is replaced by red light.

Red light is incident on a think converging lens of focal length f. Briefly explain how the focal length of the lens will change,if red light is replaced with blue light.

What will be the effect on interference fringes if red light is replaced by blue light?

What will be the effect on the interferece fringes,if red light is replaced by blue light?

How does focal length of a lens change when red light is replaced by violet light?

In a YDSE experiment red light is replaces by violet light . Then

How does the focal length of a glass lens change when blue light is replaced by red light. Give reasons.