A concave mirror is held in water. What should be die change in the focal length of the mirror?

Define focal length of concave mirror.

The focal lentht of a concave mirror is

The object and the image are at distances x and y respectively from the focus of a concave mirror. Eastablish the relation between x y and the focal length f of the mirror.

The focal length of a concave mirror in vacum is 2 m. What will be the focal length of the concave mirror in a medium of refractive index 2.76?

A concave mirror forms an image of an object, magnified 4 times. When the object is moved through 5 cm along the axis of the mirror, the magnification of the image is 5. What is the focal length of the mirror?

If a concave mirror is immersed in water will its focal length change?

A concave mirror forms an erect and there times magnified image on the axis of the mirror at a distance of 32 cm from the object. What is the focal length of the mirror?

If a convex mirror-is emerged in water (mu_w=4//3) , then the focal length will be

The image formed by a convex mirror is one third of the object. If the focal length of the mirror is 30 cm, calculate the image distance.