Q .     A parallel beam of white light fall on a combination of a concave and a convex lens, both of the same material. Their focal lengths are `15 `cm and `30` cm respectively for the mean wavelength in white light. On the same side of the lens system, one sees colored patterns with violet color nearer to the lens.

JEE 1988
A True
B False

HINT

Focal length of concave is less, i.e., power of concave lens will be more. Hence, the combination will behave like a concave lens.

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