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प्रश्न
If a planet subtends an angle α at distance D, what formula is used to find the planet's diameter?
पर्याय
Diameter = D/2
Diameter = α × D
Diameter = α + D
Diameter = D²/α
MCQ
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उत्तर
Diameter = α × D
Explanation:
Derived from the small-angle approximation, where diameter is analogous to the arc length (arc length = angle × radius).
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