Question
Physics Question on Optical Instruments
The magnifying power of an astronomical telescope can be increased if we
A
increase the focal length of the objective
B
increase the focal length of the eye-piece
C
decrease the focal length of the objective
D
decrease the focal length of the objective and at the same time increase the focal length of the eye piece
Answer
increase the focal length of the objective
Explanation
Solution
Answer (a) increase the focal length of the objective