(a) What is meant by the dispersion of white light? Describe the formation of the rainbow in the sky with the help of a diagram.
(b)What is hypermetropia? Draw ray diagrams to show the image formation of an object by
(i) Hypermetropic eye
(ii) Correction made with a suitable lens for the hypermetropic eye.
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Dispersion of Light' can be defined as the splitting of white light when it passes through a glass prism into its constituent spectrum of colors (i.e. violet, indigo, blue, green, yellow, orange and red). ... The white light splits into its constituent colors at various frequencies and various angles.
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