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Spherical Mirrors

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by

Richard Datwyler

on 23 March 2016

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Transcript of Spherical Mirrors

Spherical Mirrors
Spherical mirrors are another way to focus light.
Lenses focus by refraction.
Mirrors by reflection.
The focal length of a mirror is related to its radius.

The thin lens equation also works for spherical mirrors. Also the magnification.
To draw the ray diagrams similar rules apply.
see other tutorial on ray diagrams
positive
negative
R,f
s'

Concave mirror

real image
(same side object)
Convex mirror

virtual
(opp. side object)
The last bit to worry about is the signs of the different variables in the equations.
A 2.5 cm object is placed 10 cm infront of a convex mirror with a radius of 50 cm.
Is it real or virtual?
What is its height?
Where is the image formed?
What is the focal length of the mirror?
virtual
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