" If a spherical mirror is immersed in a liquid,its focal length will."

If a spherical mirror is dipped in water, does its focal length change ? 17. If a thin lens is dipped in water, does its focal length change ?

The radius of curvature of a spherical mirror is 20 cm. What is its focal length?

If a concave mirror is held in water, then its focal length

If a convex lens is immersed in water, then its focal length

The distance of an object from a spherical mirror is equal to the focal length of the mirror. Then the image.

The distance of an object from a spherical mirror is equal to the focal length of the mirror. Then the image: