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A telescope has an objective lens of focal length and an eyepiece of focal length . The magnifying power for a relaxed eye is .
- A.
- B.
- C.
- D.
Show correct answer & step-by-step solution
Correct answer: B —
Solution
- The magnifying power for a relaxed eye is .
- Substitute and .
- .
- Hence the answer is (B).
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