1. A magnifying lens gives a three times enlarged image of an object placed 20...

1. A magnifying lens gives a three times enlarged image of an object placed 20 cm from the lens. Calculate the focal length of the lens.
2. A compound microscope, with lenses of focal lengths 3.0 cm and 5.0 cm for the objective and eyepiece respectively, has an object placed 4.0 cm from the objective lens. If the first image formed is 3.0 cm from the eyepiece lens, calculate the distance of the final image from the eyepiece.
3. (A) Draw a labeled of an astronomical telescope with a final image at infinity.
(b)An object is placed halfway between a converging lens of focal length 5 cm and a plane mirror. If the lens and mirror are placed 12 cm apart, calculate the distance between the images formed by the lens and mirror?

In Physics
3 Answers Available
Asked by ayo on 1st July, 2020