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- 2.4 and 12.0
- 2.4 and 15.0
- 2.0 and 12.0
- 2.0 and 3.0

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Solution

Verified by Toppr

Using lens formula for eyepiece, −1u+1v1=1fe

⇒−1u+1∝=13⇒u1=−3 cm[∵i=0]

But the distance between objective and eyepiece is 15 cm (given).

Therefore, distance of image formed by the objective, v=15−3=12 cm. Let u be the object distance from the objective, then for objective lens −1u+1v=1f0 or −1u+112=12

⇒−1u=12−112=512u=−125=2.4 cm

a. is the correct option.

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