Ray Optics and Optical Instruments

Related Questions

• When white light passes through a glass prism, one gets spectrum on the other side of the prism. In the emergent beam, the ray which is deviating least is or Deviation by a prism is lowest for

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• An object is placed $40cm$ from a concave mirror of focal length $20cm.$ The image formed is

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• A lens of refractive index $n$ is put in a liquid of refractive index $n'$ of focal length of lens in air is $f$, its focal length in liquid will be

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• Which of the following element was discovered by study of Fraunhofer lines

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• 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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