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प्रश्न
The magnifying power of a telescope is high, if its objective and eyepiece have respectively ____________.
पर्याय
small focal lengths
large focal lengths
small and large focal length
large and small focal length
MCQ
रिकाम्या जागा भरा
उत्तर
The magnifying power of a telescope is high, if its objective and eyepiece have respectively large and small focal length.
Explanation:
A telescope's magnification power is determined by
m = `−"f"_0/"f"_"e"`
As a result, when the objective lens has a big focal length and the eye piece has a tiny focal length, the magnifying power will be high.
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