The slit of a collimator is illuminated by a source as shown in the adjoining figures. The distance between the slit S and the collimating lens L is equal to the focal length of the lens. The correct direction of the emergent beam will be as shown in figure
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Verified by ExpertsThe correct answer is:
C
In case of convex lens if rays are coming from the focus, then the emergent rays after refraction are parallel to principal axis.
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