Ray Optics and Optical Instruments

Related Questions

• A thin equiconvex lens is made of glass of refractive index 1.5 and its focal length is 0.2 m, if it acts as a concave lens of 0.5 m focal length when dipped in a liquid, the refractive index of the liquid is

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• Line spectra are due to

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• An object placed $10 cm$ in front of a lens has an image $20 cm$ behind the lens. What is the power of the lens (in dioptres)

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• Magnification of a compound microscope is 30. Focal length of eye-piece is 5 cm and the image is formed at a distance of distinct vision of 25 cm. The magnification of the objective lens is

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• When light is refracted from air into glass

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