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1.Mention two uses of the concave mirror.
1.Discuss the theory of the two methods of determining focal length (f).​

Sagot :

Saralatin2idn

Answer:

1. telescope

2.

[tex]f = \frac{r}{2} [/tex]

[tex]f = \frac{r}{2} [/tex]f- focal length

[tex]f = \frac{r}{2} [/tex]f- focal length r- the radius of curvature of the mirror

[tex] \frac{1}{f} = \frac{1}{p} + \frac{1}{l} [/tex]

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

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

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