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Surveying

Q1: Pick up the correct specification of Ramsden eyepiece from the following :

A all the above.

B the curved surfaces of plano-convex lenses face each other

C the distance between the diaphragm and the front lens of the eyepiece is kept equal to 1/4 th of the focal length of a lens so that rays from a point on the diaphragm enter the eye as a parallel beam

D it consists of two equal piano convex lenses

E the two lenses are separated by a distance equal to 2/3 of the focal length of either lens.

ANS:E - all the above.

No answer description is available.



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