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Which one of the following diagrams correctly illustrates the refraction of a normally incident ray of light through a glass slab?

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Important Questions on Ray Optics

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A plane mirror is placed at the bottom of the tank containing a liquid of refractive index, μP is a small object at a height, h above the mirror. An observer, O vertically above P outside the liquid, sees P and its image in the mirror. The apparent distance between these two will be

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A tank is filled with water to a height of 12.5 cm. The apparent depth of a needle lying at the bottom of the tank is measured by a microscope to be 9.4 cm. What is the refractive index of water? If water is replaced by a liquid of refractive index 1.63 upto the same height, by what distance would the microscope have to be moved to focus on the needle again?
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A ray of light passes through an equilateral glass prism in such a manner that the angle of incidence is equal to the angle of emergence and each of these angles is equal to 34th of the angle of the prism. The angle of deviation is 
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If a prism having refractive index 2 has an angle of minimum deviation equal to the angle of refraction of the prism, then the angle of refraction of the prism is:
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If the refractive indices of crown glass for red, yellow and violet colours are 1.5140,1.5170  and 1.5318, respectively and for flint glass these values are 1.6434, 1.6499 and 1.6852, respectively, then the dispersive powers for crown and flint glass are, respectively,
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Refractive index of a prism is 7/3 and the angle of prism is 60°. The minimum angle of incidence of a ray that will be transmitted through the prism is
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A thin prism P1 with angle 4° and made from glass of refractive index 1.54 is combined with another prism P2, made of glass of refractive index 1.72 to produce dispersion without deviation. The angle of prism P2 is
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A prism can have a maximum refracting angle of (C= critical angle for the material of the prism)