An object is located `20 cm` to the left of a converging lens with `f=10 cm.` A second identical lens is placed to the right of the first lens and then moved until the image it produces is identical in size and orientiation to the object. What is the separation between the lenses?

An object is placed 20cm to the left of a converging lens having focal length 16cm. A second, identical lens is placed to the right of the first lens, such that the image formed by the combination is of the same size and orientation as the object is. Find the separation between the lenses.

An object is placed 20cm to the left of a converging lens having focal length 16cm. A second, identical lens is placed to the right of the first lens, such that the image formed by the combination is of the same size and orientation as the object is. Find the separation between the lenses.

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

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 12cm in front of a lens to form an image on a screen. The size of the image is twice that of the object. What is the distance between the object and the image?

An object is placed 12cm in front of a lens to form an image on a screen. The size of the image is twice that of the object. What is the distance between the object and the image?

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]

The focal length of a convex lens is 20 cm . If an object of height 4 cm is placed at 30 cm from the lens , find the position, nature and size of the image .