[" An object "1cm" tall is placed in front of a mirror at "],[" a distance of "4cm" .In order to produce an upright "],[" image of "3cm" height one needs a "]

An object 1 cm tall is placed 4 cm in front of a mirror. In order to produce an upright image of 3cm height one needs a

An object 1 cm tall is placed 4 cm infront of a mirror. In order to produce an upright image of 3 cm height one needs a

An object 1cm tall is placed 4cm in front of a mirrorr. In order to produce an upright image of 3cm height one needs a

An object cm 1 tall is placed cm 4 infront of a mirror. In order to produce an upright image of cm 3 height one needs a

An object 6 cm tall is placed in front of a convex lens at a distance of 18 cm. If the image is formed at a distance of 9 cm on the other side of lens, find the height of the image

A concave mirror of focal length 15 cm is placed on a table. An object is placed in front of the mirror at a distance of 45 cm. Another object of half the size is placed in front of the mirror. At what position should be second object placed so that height of both the images formed are same.

An object of height 7.5 cm is placed in front of a convex mirror of radius of curvature 25 cm at a distance of 40 cm .The height of the image should be -