Ray Optics and Optical Instruments

Related Questions

• To increase the magnifying power of telescope ($f_o$ = focal length of the objective and $f_e$ = focal length of the eye lens)

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• A man can see the objects upto a distance of one metre from his eyes. For correcting his eye sight so that he can see an object at infinity, he requires a lens whose power is

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• For a real object, which of the following can produced a real image

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• Astigmatism (for a human eye) can be removed by using

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• A concave lens of glass, refractive index $1.5$, has both surfaces of same radius of curvature R. On immersion in a medium of refractive index $1.75$, it will behave as a

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