Pick up the correct specification of Ramsden eyepiece from the followi – McqOptions

MCQOPTIONS

1.	Pick up the correct specification of Ramsden eyepiece from the following :
A.	it consists of two equal piano convex lenses
B.	the curved surfaces of plano-convex lenses face each other
C.	the two lenses are separated by a distance equal to 2/3 of the focal length of either lens.
D.	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
Answer» E.

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