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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 a 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.
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