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An object approaches a convergent lens from the left of the lens with a uniform speed 10 m/s and stops at the focus. The image moves

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Important Questions on Ray Optics

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A converging lens has a focal length of 0.12 m. To get an image of unit magnification the object should be placed at what distance from the converging lens?
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A quartz prism can produce a minimum deviation δ in a light beam. Then the minimum deviation produced by three prisms combined together is
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An object is seen through a simple microscope of focal length 10 cm. Find the angular magnification produced, if the image is formed at the near point of the eye which is 20 cm away from it.
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Dispersion without deviation is produced by two thin (small angled) prisms which are combined together. One prism has angle 5° and refractive index 1.56. If the other prism has refractive index 1.7, what is its angle?