Page 25 - cbse-class-10-light-reflection-and-refraction

Reflectors are used in street lamps to divert light over a large area.

Position of object Position of image Size of the image Nature of the
image

At infinity At focus Extremely Virtual and erect
diminished

Between infinity Between the Diminished Virtual and erect
and pole of the focus and pole
mirror

Mirror formula

1  1  1
f v u

Here, u is the object distance, v is the image distance and f is the focal length.

Magnification

The magnification produced by a spherical mirror indicates the extent to which an
object's image is magnified in relation to the object size.

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