– In Ramsdens’s eye-piece, the two principal planes are …..
A. Parallel to each other
B. Crossed to each other
C. Perpendicular to each other
D. None of these
Answer:B
– In Ramsdens’s eye-piece, the two principal planes are …..
A. Parallel to each other B. Crossed to each other C. Perpendicular to each other D. None of these