An upright object is placed along pricincipal axis at a distance "m" times the focal length of divergent lens.The size of the image is shorter than that of "the object by (A) times (B) "(m+1)" times (C) "(m-1)" times (D) "m^(2)" times

[" An upright object is placed along pricincipal axis "],[" at a distance m times the focal length of divergent "],[" lens.The size of the image is shorter than that of "],[" the object by "],[[" (A) "," m times "],[" (B) ",(m+1)" times "],[" (C) ",(m-1)" times "],[" (D) ",m^(2)" times "]]

A concave mirror of focal length produces an image m times the size of the object. If image is real, then the distance of the object from mirror is

What is the distance of an object from a concave mirror of focal length 20 cm so that the size of the real image is three times the size of the object ?

A concave mirror of focal length f produces a real image n times the size of the object. The distance of the object from the mirror is

A convex lens of focal length f produces a virtual image n times the size of the object. Then the distance of the object from the lens is

A concave mirror of focal length f produces a real image n times the size of the object. What is the distance of the object from the mirror?