Magnification Problem_Ray Optics

Magnification of compound microscope is not connected with

What do you mean by linear magnification produced by mirrors ? The power of a lens is +2.5 D . What kind of lens is it and what is its focal length ? Draw a ray diagram of an image when an object is placed on the principal axis of a convex lens between focus and optical centre.

(a) Draw a ray diagram showing the image formation by a compound microscope. Hence obtain expression for total magnification when the image is formed at infinity.

The difference between maximum magnification and minimum magnification of a simple microscope is

Draw the labelled ray diagram for the formation of image by a compound microscope. Derive the expression for the total magnification of a compound microscope. Explain why both the objective and the eyepiece of a compound microscope must have short focal lengths.

A concave lens always forms a virtual image. Draw a ray diagram to show it. State the magnification of the image with sign, whether greater than, equal to or less than 1.

Lateral magnification of objective of compound microscope is 100 and angular magnification of its eyepiece is 20. The magnifying power of compound microscope is

Magnification produced by a rear view mirror fitted in vehicles

An optical instrument used for angular magnification has a 25 D objective and a 20 D eyepiece. The tube length is 25 cm when the eye is least strained. (a) Whether it is a microscope or telescope? (b) What is the angular magnification produced?

When the object is at distance u_1 and u_2 from the optical centre of a convex lens, a real and a virtual image of the same magnification are obtained. The focal length of the lens is