A concave mirror is held inside water.What would be the cahgne in the focal length of the mirror?

Define the focal length of mirror

What is the focal length of a plane mirror ?

What is the focal length of a plane mirror?

A concave miror is placed in water will there be any change in focal length? Give reason?

A concave mirror is used in opthalmoscope .Why?

With a concave mirror,the magnification is found to be four times as large,when the object was 25 cm fom the mirror as it was with the object at 40 cm from the mirror,the image being real in both the cases.Find the focal length of teh concave miror.