When the object is at distance `mu_1 and mu_2` from the optical centre of a convex lens, a real and a virtual image of the same magnification are obtained. The focal length of the lens is

When the object is at distance u_1 and u_2 from the optical centre of a convex lens, a real and a virtual image of the same magnification are obtained. The focal length of the lens is

When an object is at a distance u_(1) and u_(2) from the optical centre of a lens, a real and virtual image are formed respectively, with the same magnification.The focal length of lens is:

When an object is at a distance 3 meters and 1meters from the optical centre of a convex lens, a real and virtual image are formed respectively, with the same magnification. Find the focal length of the lens (in meters)

When an object is at a distance 3 meters and 1meters from the optical centre of a convex lens, a real and virtual image are formed respectively, with the same magnification. Find the focal length of the lens (in meters)

When an object is at a distance u_(1)andu_(2) from a lens, real image and a virtual image is formed respectively having same magnification. The focal length of the lens is

When an object is at distances x and y from a lens, a real image and a virtual image is formed respectively having same magnification. The focal length of the lens is

When an object is at distances x and y from a lens, a real image and a virtual image is formed respectively having same magnification. The focal length of the lens is

When the object is at distance u_(1) and u_(2) the images formed by the same lens are real and virtual respectively and of the same size.Then focal length of the lens is:

When the object is at distance u_(1) and u_(2) the images formed by the same lens are real and virtual respectively and of the same size.Then focal length of the lens is: