Ray Optics and Optical Instruments

Related Questions

• A ray of light is incident on an equilateral glass prism placed on a horizontal table. For minimum deviation which of the following is true

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• We combined a convex lens of focal length $f_1$ and concave lens of focal lengths $f_2$ and their combined focal length was $F$. The combination of these lenses will behave like a concave lens, if

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• A person is suffering from myopic defect. He is able to see clear objects placed at 15 cm. What type and of what focal length of lens he should use to see clearly the object placed 60 cm away

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• The dispersive powers of crown and flint glasses are 0.02 and 0.04 respectively. In an achromatic combination of lenses the focal length of flint glass lens is 40 cm. The focal length of crown glass lens will be

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• Material A has critical angle ${{i}_{A}},$ and material B has critical angle ${{i}_{B}}({{i}_{B}}>{{i}_{A}}).$ Then which of the following is true (i) Light can be totally internally reflected when it passes from B to A (ii) Light can be totally internally reflected when it passes from A to B (iii) Critical angle for total internal reflection is ${{i}_{B}}-{{i}_{A}}$ (iv) Critical angle between A and B is ${{\sin }^{-1}}\left( \frac{\sin {{i}_{A}}}{\sin {{i}_{B}}} \right)$

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