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?

An object is placed in front of a concave mirror, a three times magnified image is formed. If the object is moved through a distance 20 cm towards the mirror, a virtual image of same magnification is formed. What is the focal length of the mirror?

A concave mirror gives a real image magnifies 4 times. When the object is moved 3 cm the magnification of the real image is 3 times. Find the focal length of mirror.

A concave mirror gives a real image magnifies 4 times. When the object is moved 3 cm the magnification of the real image is 3 times. Find the focal length of mirror.

An object placed in front of a concave mirror at a distance of x cm from the pole gives a 3 times magnified real image. If it is moved to a distance of (x+5) cm, the magnification of the image becomes 2. The focal length of the mirror is

An object placed in front of a concave mirror at a distance of x cm from the pole gives a 3 times magnified real image. If it is moved to a distance of (x+5) cm, the magnification of the image becomes 2 . The focal length of the mirror is

An object placed at 20cm in front of a concave mirror produces three times magnified real image. What is the focal length of the concave mirror?

An object placed at 20cm in front of a concave mirror produces three times magnified real image. What is the focal length of the concave mirror?

For an object placed at a distance 20 cm from a concave mirror, the image is formed at the same position. What is the focal length of the mirror?