Focal length of objective and eyepiece of telescope are 200 cm and 10 cm respectively. What is the length of telescope for normal adjustment?
A. 190 cm
B. 250 cm
C. 225 cm
D. 210 cm
Answer:D
Focal length of objective and eyepiece of telescope are 200 cm and 10 cm respectively. What is the length of telescope for normal adjustment?
A. 190 cm B. 250 cm C. 225 cm D. 210 cm