Question

Height of the image
Height of the object
Magnification produced by a lens is also related to the object distance u, and the image
distance . This relationship is given by
Magnification (m) --
Example 13
A concave lens has focal length of 15 cm. At what distance should the object from the
lens be placed so that it forms an image at 10cm from the lens? Also find the magnification
produced by the lens
Solution
A concave lens always forms a virtual, erect image on the same side of the object.
Image-distance v-10 cm,
Focal length
- 15 cm,​

Answer 1

Answer:

A concave lens always forms a virtual, erect image on the same side of the object.

Image-distance v = –10 cm;

Focal length f = –15 cm;

Object-distance u = ?

Explanation: