" (6) its virtunl imige is formed "20" cm trom the mirror "6" focal length of "10" cm,find the two positions where an object can be placed to giv "

An object is placed 15 cm from a concave mirror of focal length 10 cm. Find the position, nature and size of the image.

An object is placed 40 cm from a concave mirror of focal length 20 cm, the image formed is

A plane mirror is placed 22.5 cm in front of the concave mirror of focal length 10 cm. Find where an object a can be placed between the two mirrors, so that the first image in both the mirrors coincides.

If a concave mirror has a focal 10 cm, find the two positions where an object can be placed to give, in each case, an image twice the heigh of the of the object .

A 0.5 cm high object is placed at 30 cm from a convex mirror whose focal length is 20 cm. Find the position and size of the image.