What is the focal length of the eyepiece to give a total magnification of 240?
A. 0.13 cm
B. 1.5 cm
C. 1.9 cm
D. 2.3 cm
Answer:D
What is the focal length of the eyepiece to give a total magnification of 240?
A. 0.13 cm B. 1.5 cm C. 1.9 cm D. 2.3 cm