– Ramsden’s eye-piece the distance between two lenses for achromatism is …..
A. x = f
B. x = 2f
C. x = 3f
D. x = 4f
Answer:A
– Ramsden’s eye-piece the distance between two lenses for achromatism is …..
A. x = f B. x = 2f C. x = 3f D. x = 4f