Optics Question 403
Question: A Gallilean telescope has objective and eye-piece of focal lengths 200 cm and 2 cm respectively. The magnifying power of the telescope for normal vision is
[MP PMT 1996]
Options:
A) 90
B) 100
C) 108
D) 198
Show Answer
Answer:
Correct Answer: B
Solution:
For normal vision (relaxed eye), the image is formed at infinity. Hence the magnifying power of Gallilean telescope $ =\frac{f _{o}}{f _{e}}=\frac{200}{2}=100 $ .
