`O_1P` is the principal axis and O is the point object. Given,
`O_1P=30cm, f=20cm` and `OP=2mm`. Find the image distance and its position.

An object of height 5 cm is placed at 30 cm distance on the principal axis in front of a concave mirror of focal length 20 cm. Find the Image distance and size of the image.

Figure shows an arrangement ofan equiconvex lens (f=20 cm in air) and a concave mirror (R=80cm). A point object O is placed on the principal axis at a distance 40 cm from the lens such that the final image is also formed at the position of object. Find d.

A point object is placed 60 cm from the pole of a concave mirror of focal length 10 cm on the principal axis. Find: a. the position of image. b. If the object is shifted 1 mm towards the mirror along principal axis, find the shift in image. Explain the result.

A point object is placed 60 cm from the pole of a concave mirror of focal length 10 cm on the principal axis. Find: a. the position of image. b. If the object is shifted 1 mm towards the mirror along principal axis, find the shift in image. Explain the result.

A point object O moves from the principal axis of a converging lens in a direction OP. I is the image of O, will move initially in the direction

A point object O moves from the principal axis of a converging lens in a direction OP. I is the image of O, will move initially in the direction