A satellite is revolving round the earth in circular orbit (a) if mass of earth is made four tim...

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A satellite is revolving round the earth in circular orbit
(a) if mass of earth is made four times, keeping other factors constant, orbital speed of satellite will become two times
(b) corresponding to change in part (a), time period of satellite will remain half
(c) when value of \( G \) is made two times orbital speed increases and time period decreases
(d) \( G \) has no effect on orbital speed and time period
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