Ray Optics and Optical Instruments

Related Questions

• When light is refracted from air into glass

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• The speed of light in air is $3\times {{10}^{8}}\,\,m/s$. What will be its speed in diamond whose refractive index is 2.4

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• A thin lens made of glass of refractive index $\mu = 1.5$ has a focal length equal to 12 cm in air. It is now immersed in water $\left( \mu \,=\,\frac{4}{3} \right)$. Its new focal length is

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• The focal length of convex lens is 30 cm and the size of image is quarter of the object, then the object distance is

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• A fish is a little away below the surface of a lake. If the critical angle is 49°, then the fish could see things above the water surface within an angular range of ${{ heta }^{o}}$ where

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