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Ramsden eye-piece consists of. | |
A. | two convex lenses short distance apart [Wrong Answer] |
B. | two concave lenses short distance apart [Wrong Answer] |
C. | one convex lens and one concave lens short distance apart [Wrong Answer] |
D. | two plano-convex lenses short distance apart, with the convex surfaces facing each other. [Correct Answer] |