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An astronomical telescope has an angular...

An astronomical telescope has an angular magnification of magnitude `5` for distant object. The separation between the objective and eyepiece is `36cm` and the final image is formed at infinity. Determine the focal length of objective and eyepiece.

A

45 cm and - 9 cm

B

50 cm and 10 cm

C

72 cm and 5 cm

D

30 cm and 6 cm

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The correct Answer is:
D
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