How does focal length of a convex lens change if monochromatic blue light is replaced by monochromatic red light?

How does the focal length of a convex lens change if monochromatic red light is used instead of monochromatic blue light?

What changes in the focal length of a convex lens occur,when the incident violet light on them is replaced by red light?

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

What changes in the focal length of a concave mirror when the incident violet light on them is replaced by red light?

How does the power of a convex lens vary if the incident red light is replaced by violet 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.

How does the power of a convex lens vary,if the incident violet light is replaced by red light?

What two main changes in diffraction pattern of a single slit will you observe,when the monochromatic source of light is replaced by a source of white light?

Why can we not get diffraction from a wide slit illuminated by a monochromatic light?

Briefly explain,how the focal length of a convex lens changes with increase in wavelength of incident light.