Question

u
Solution
Heights
Focal 1
object
Imag
Heig
Si
The magnification produced by a lens, similar to that for sphere
mirrors, is defined as the ratio of the height of the image and the he
of the object. It is represented by the letter m. If h is the height of the
object and h' is the height of the image given by a lens, then the
Magnification produced by a lens is also related to the object-distance
Magnification
magnification produced by the lens is given by,
Height of the Image h'
Height of the object h
u, and the image-distance v. This relationship is given by
Magnification (m) = h'/h = v/u
Example 10.3
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 10 cm
from the lens? Also, find the magnification produced by the lens.
(10.10
Solution
A concave lens always forms a virtual, erect image on the same side​

Answer 1

10.3 example is here

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Answer 2

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