Question

An achromatic combination of lenses is formed by joining
(a) 2 convex lenses
(b) 2 concave lenses
(c) 1 convex and 1 concave lens
(d) 1 convex and 1 plane mirror

Answer 1

Answer:

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Explanation:

c. 1 convex and 1 concave lens

Answer 2

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option C is correct...........

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