To construct a ray diagram we
use two rays of light which are so
chosen that it is easy to
determine their directions after
reflection from the mirror. Choose these two rays and state the path of
these rays after reflection from a
concave mirror. Use these two rays
to find the nature and position of the
image of an object placed at a
distance of 15 cm from a concave
mirror of focal length 10 cm.
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Incident ray and refracted ray
When a ray of light pass parallel through the principal axis after refletion the refracted ray pass through focus or appear to pass through focus.
When a ray of light pass through center of curveture is reflected back along the same path.
Image formed is real and inverted.
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