A point source is placed 20 cm to the left of a concave lens of focal length 10 cm.

An object is placed 20 cm to the left of a convex lens of focal length 10 cm. If a concave mirror of focal length 5cm is placed 30 cm to the right of the lens, find the magnification and the nature of the final image. Draw the ray diagram and locate the position of the image.

[" An object is placed "20cm" to the left of a "],[" convex lens of focal length "10cm" .Find "],[" the magnitude of magnification "]

An object is placed 12 cm to the left of a converging lens of focal length 8cm . Another converging lens of 6 cm focal lengh is placed at a distance of 30 cm to the right of the first lens. The second lens will produce

An object is placed at 20 cm left of the convex lens of focal length 10 cm. If a concave mirror of focal length 5 cm is placed at 30 cm to the right of the lens, find the magnification and the nature of the final image. Draw the ray diagram and locate the position of the final image. [At the object and of same size]

A point source is placed on the axis of a symmetrical convex lens of focal length 20 cm at a distance of 40cm. If the lens is raised by 1cm, by how much will the image be lifted relative to the previous axis?

On an optical bench a point object is placed at the mark of 10 cm, a convex lens of focal length 15 cm, at the mark of 40 cm and a concave lens of focal length 15 cm placed at the mark of 60 cm. The final image formed at the mark of (point object and two lenses are coaxial )

An object is placed 25 cm in front of a concave lens of focal length 25 cm. The position of images is

A convex lens of focal length 20 cm is placed in contact with a concave lens of focal length 10 cm. What is the focal length and power of the combination ?

An object is placed at a distance of 20 cm from the pole of a concave mirror of focal length 10 cm. The distance of the image formed is