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Select the correct option stating the re...

Select the correct option stating the reason for your choice.
A satellite is revolving around the earth in a circular path. It has (i) constant velocity
(ii) constant acceleration
(iii) variable acceleration.

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An object continuously changes the direction of its velocity while moving in a circular path. Hence, the velocity is not a constant. Also, during circular motion, there is an acceleration along the radius of the orbit directed towards the centre. The magnitude of this acceleration is constant, but its direction changes continuously. Hence ,the acceleration also is not constant. Acceleration of the satellite keeps changing and therefore, option (iii) is correct.
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