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Bhavna Singh
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Asked: 2021-12-11T10:14:05+00:00 In:

Principal axis is:

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100%[A] imaginary line joining of two centres of curvature ( 2 voters )
0%[B] centres of two imaginary spheres of which lens is a part
0%[C] centre point of a lens
0%[D] Radii of two imaginary spheres of which the lens is a part
Based On 2 Votes

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    1. [A] imaginary line joining of two centres of curvature

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