Join IDNLearn.com and start exploring the answers to your most pressing questions. Get the information you need from our community of experts who provide accurate and comprehensive answers to all your questions.




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


Sagot :

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