Ray Optics and Optical Instruments

Related Questions

• A microscope is focussed on a coin lying at the bottom of a beaker. The microscope is now raised up by $1$ cm. To what depth should the water be poured into the beaker so that coin is again in focus ? (Refractive index of water is $\frac{4}{3}$) [BHU 2003]

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• When diameter of the aperture of the objective of an astronomical telescope is increased, its

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• The diameter of the objective lens of a telescope is 5.0 m and wavelength of light is 6000 Å. The limit of resolution of this telescope will be

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• Time taken by the sunlight to pass through a window of thickness 4 mm whose refractive index is 1.5 is

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• Dispersion of light is due to

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