An object is placed in front of a convex mirror. Which one
of the following statements is correct?

An object is placed in front of a convex mirror of focal length 30 cm.If the image formed is a quarter of the size of the object,find the position of the image.

An object is placed in front of a convex mirror of a radius of curvature 20 cm. Its image is formed 8 cm behind the mirror. The object distance is

A real object is placed in front of a convex mirror (fixed).The object is moving toward the mirror. If v_(0) is the speed of object and v_(i) is the speed of image, then

A real object is placed in front of a convex mirror (fixed).The object is moving toward the mirror. If v_(0) is the speed of object and v_(i) is the speed of image, then