Question

Show
ray diaguem figure wehen a
is parallel to the puncipal axis in case
mirrors
of Concave​

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.