Explain the working principle of an optical fibre with the help of a diagram. Mention one use of a light pipe.

Question

TextRefractive Index of a MediumTotal Internal Reflection and Critical AngleOptical Fibres and Their ApplicationsAngle of Minimum Deviation in PrismCBSE PYQ

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The colour of light for which the refractive index of glass is minimum, is :

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Absolute refractive index of glass and water is 3/2 and 4/3 respectively. If the speed of light in glass is 2 × 10⁸ m/s, the speed of light in water is :

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