Advertisements
Advertisements
Question
How is the magnification (m) produced by a lens related to the object distance (u) and the image distance (v)?
Advertisements
Solution
The magnification produced by a lens = v/u
RELATED QUESTIONS
The following diagram shows an object AB and a converging lens L with foci F1 and F2 State three characteristics of the image in relation to the object.
A lens forms an erect, magnified, and virtual image of an object. Where is the object placed in relation to the lens?
A lens forms an erect, magnified and virtual image of an object.Draw a ray diagram to show the formation of image.
A magnifying glass forms ______.
The focal length of a convex lens is 25 cm. At what distance from the optical centre of the lens an object be placed to obtain a virtual image of twice the size?
The maximum magnifying power of a convex lens of focal length 5 cm can be ______.
Name the lens used as a magnifying glass.
Will the image formed by a magnifying glass be real or virtual?
(i) Draw a ray diagram to show how the lens can be used as a ‘magnifying glass’? State the nature of the lens.
(ii) In what respect does the image in (i) above different from the image formed by a concave lens?
Write an expression for the magnifying power of a simple microscope. How can it be increased?
