Question

a light ray parallel to the principal axis reflected from the mirror.draw the reflected ray and show the directions​

Answer 1

Answer:

A ray of light parllel to principal axis (shows that u=∞) after reflection from concave mirror (of focal length f) passes through.

u

−1

+

v

1

=

f

1

So

∞

−1

+

v

1

=

f

−1

v

1

=

f

−1

v=−f

i.e. it passes through focus.

Answer 2

Explanation:

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