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Astronauts in a stable orbit around the ...

Astronauts in a stable orbit around the earth are said to be in a weightless condition. The reason for this is that

A

the capsule and its contents are falling freely at the same rate

B

there is no gravitational force action on them

C

the gravitational force of ht earth balances that of the sun

D

there is no atmosphere at the height at which they are orbiting

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The correct Answer is:
a
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  10. A geo-stationary satellite has an orbital period of

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