Question

1.Mention two uses of the concave mirror.

Answer 1

Answer:

1. telescope

2.

$f = \frac{r}{2}$

$f = \frac{r}{2}$f- focal length

$f = \frac{r}{2}$f- focal length r- the radius of curvature of the mirror

$\frac{1}{f} = \frac{1}{p} + \frac{1}{l}$

p-the distance of the object from the vertex of the mirror

l-the distance of the figure from the vertex of the mirror