Optics Question 422

Question: In a laboratory four convex lenses L1,L2,L3 and L4 of focal lengths 2, 4, 6 and 8 cm respectively are available. Two of these lenses form a telescope of length 10 cm and magnifying power 4. The objective and eye lenses are

[MP PMT 2001]

Options:

A) L2,L3

B) L1,L4

C) L3,L2

D) L4,L1

Show Answer

Answer:

Correct Answer: D

Solution:

To make telescope of higher magnifying power, fo should be large and fe should be least.



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