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Which one of the following materials cannot be used to make a lens?

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asked Jun 8, 2017 in Physics by Kundan kumar (49,132 points) ● 34 ● 435 ● 1364
(a) Water
(b) Glass
(c) Plastic
(d) Clay

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answered Jun 8, 2017 by Vikash Kumar (144,729 points) ● 8 ● 11 ● 26
edited Jan 30, 2018 by faiz
 
Best answer
(d) A lens allows light to pass through it. Since clay does not show such property, it cannot be used to make a lens.
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