Optics Question 420
Question: Four lenses of focal length + 15 cm, + 20cm, + 150cm and + 250 cm are available for making an astronomical telescope. To produce the largest magnification, the focal length of the eye-piece should be
[CPMT 2001; AIIMS 2001]
Options:
A) + 15 cm
B) + 20 cm
C) +150 cm
D) + 250 cm
Show Answer
Answer:
Correct Answer: A
Solution:
For largest magnification focal length of eye lens should be least.
