the focal length of objective and eye lens of a stronomical telescope are respectively 2m and 5 cm. Final image is formed at (i) least distance of distinct vision (ii) infinity. The magnifying power in both cases will be:
Text Solution
Verified by ExpertsThe correct answer is:
A
When the final image is at the least distance of distinct vision, then
m = 
= –48
When the final image is at infinity, then
m = 
= 
= –40
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