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प्रश्न
Which type of lenses are:
thinner in the middle than at the edges?
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उत्तर
A concave lens is thinner in the middle than at the edges.
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या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
Which type of lenses are:
thinner in the middle than at the edges?
A concave lens is thinner in the middle than at the edges.