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JEEMAIN and NEET
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Physics
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Class11
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Gravitation
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Period of revolution of an earth satellite close to surface of earth is 90 minutes. The time period of another satellite in an orbit at a distance three times the radius of earth from its surface will be
\[(a)\;720\;min \quad (b)\;360\;min \quad (c)\;90 \sqrt 8 min \quad (d)\;270\;min \]
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