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10.
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12.
13.
The angle of contact depends on
i. The nature of the liquid.
ii. The solid with which it is in contact.
iii. The purity of solid and liquid.
iv. Nature of the vapour.
A) i, ii and iii B) ii, iii and iv
C) i, ii, iii and iv D) i, iii and iv
. Which of the following is the relation between numerical aperture and acceptance angle
in the case of optical fibre communication ? Symb....
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