Focal length of a concave mirror is f. The distance from its focal point to the object is P. Find the ratio of heights of image.

The focal length of concave mirror is f . Is there any change in focal length when it is completely immersed in water ? If not why ?

There is an object infront of convex mirror at a distance of 5 cm. If its focal length is 10 cm then What is the image distance ?

If focal length of the concave mirror is 20 cm, we get virtual image if the object placed at a distance……..than 20 cm

The focal length of a huge concave mirror is 120 cm. A man is standing in front of it at a distance of 40cm. What are the characteristics of his image in that mirror?