An object lies at a distance of 2f from a concave lens of focal length f. Draw a ray-diagram to illustrate the image formation.

An object is placed at a distance of f/2 from a convex lens of focal length f. The image will be

An object is placed at a distance f in front of a concave lens of focal length f. Locate its image.

An object is situated at a distance of f//2 from a convex lens of focal length f Distance of image will be-

An extended object is placed at a distance of 5.0 cm from a convex lens of focal length 8.0 cm. (a) Draw the ray diagram (to the scale) to locate the image and from this, measure the distance of the image from the lens, (b) Find the position of the image from the lens formula and see how close the drawing is to the correct result.

An object is placed at a distance of 50cm from a concave lens of focal length 20cm. Find the nature and position of the image.

An object is placed at a distance of 4 cm from a concave lens of focal length 12 cm. Find the position and nature of the image.

An object is placed at a distance of 30 cm from a concave lens of focal length 15 cm . Find the nature and position of the image.

An object is placed at a distance equal to 2f in front of a convex lens. Draw a labelled ray diagram to show the formation of image. State two characteristics of the image formed.

If and object is placed at a distance of 8 cm from a concave mirror of focal length 10 cm, discuss the nature of the imageformed by drawing the ray diagram.