AP EAMCET · PHYSICS · Ray Optics
The focal length of the objective lens of a telescope is 30 cm and that of its eye lens is 3 cm. It is focused on a scale at a distance 2 m from it. The distance of objective lens from eye lens to see the clear image is
- A 38.3 cm
- B 48.3 cm
- C 58.3 cm
- D 22.5 cm
Answer & Solution
Correct Answer
(A) 38.3 cm
Step-by-step Solution
Detailed explanation
for a telescope, \(\mathrm{f}_{\mathrm{o}}=30 \mathrm{~cm}, \mathrm{f}_{\mathrm{e}}=3 \mathrm{~cm}, \mathrm{u}_{\mathrm{o}}=-200 \mathrm{~cm}\) For objective lens,…
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