A concave mirror is held in water.what would be the change in the focal length of the mirror?

A concave mirror is held in water.what would be the change in the foca

1.	A concave mirror is held in water.what would be the change in the focal length of the mirror?
Answer» There is no change in the focal length when a concave mirror is held in water.<br>When a light passes to mirror is get reflected as same as in air as well as water medium<br>There is no change in the focal length when a concave mirror is held in water .