Fill in the blanks.
1. In going from a rarer to denser medium, the ray of light bends ……
2. The mirror used in search light is ……
3. The angle of deviation of light ray in a prism depends on the angle of ………
4. The radius of curvature of a concave mirror whose focal length is 5 cm is ………
5. Large …… mirrors are used to concentrate sunlight to produce heat in solar furnaces.
