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Total internal reflection is obtained when ray passes from to rarer medium.
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Important Questions on Ray Optics and Optical Instruments
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When image is formed at _____ then angular magnification simple microscope is given as .
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What is the use of erecting lens in a terrestrial telescope? What is its magnification?
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For the same angle of incidence, the angle of refraction in three different media A, B and C are and , respectively. In which medium the velocity of light will be maximum?
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Mention the parameter on which the colour of the light depends.
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A ray of light while travelling from a denser to rarer medium grazes the separating surface. Express the critical angle in terms of the speed of light in the two media.
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Define absolute refractive index. What is the relation between the relative refractive index between two media and the absolute refractive index of the media?
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Why does diamong sparkle?
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Two lenses of focal lengths and are to be used for making a telescope. Which lens will you use for the objective?
