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17.Observe the given figure carefully-
The given figures show the path of light through lenses of two different types, represented by rectangular boxes A and B.
What is the nature of lenses A and B?

17Observe the given figure carefully The given figures show the path of light through lenses of two different types represented by rectangular boxes A and B Wha class=

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A brings light together and B spreads it out. A is convex and B is concave.

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