Question
Physics Question on Optical Instruments
The magnifying power of an astronomical telescope can be increased by:
A
increasing the focal length of eye piece
B
increasing the focal length of objective and decreasing that of eye piece
C
decreasing the focal length of objective and increasing that of eye piece
D
increasing the focal length of objective
Answer
increasing the focal length of objective and decreasing that of eye piece
Explanation
Solution
Answer (b) increasing the focal length of objective and decreasing that of eye piece