Ray Optics and Optical Instruments

Related Questions

• The length of the tube of a microscope is 10 cm. The focal lengths of the objective and eye lenses are 0.5 cm and 1.0 cm. The magnifying power of the microscope is about

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• Line spectra are due to

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• An object $1cm$ tall is placed $4cm$ in front of a mirror. In order to produce an upright image of $3cm$ height one needs a

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• A glass convex lens $({{\mu }_{g}}=1.5)$ has a focal length of $8\,cm$ when placed in air. What would be the focal length of the lens when it is immersed in water ( ${{\mu }_{w}}=1.33$)

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• We use flint glass prism to disperse polychromatic light because light of different colours

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