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A satellite moves in a circular orbit around the earth at a height $h=\frac{R}{2}$ above the earth surface, where R is the radius of the earth.
The time period of revolution nearly is
Option: 1
90 min

Option: 2
84.6 min

Option: 3
155 min

Option: 4
180 min

Answers (1)

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$T=\frac{2\pi(R+h)}{\sqrt{\frac{GM}{R+h}}}=155 \: min$

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