A satellite revolves around the earth in an elliptic orbit. Its speed

Is the same at all points of the orbit

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Is the greatest when it is closest to the earth

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Is the greatest when it is farthest from the earth

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Depends upon mass of the satellite

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Solution

The correct option is B Is the greatest when it is closest to the earth
$V e l o c i t y = \sqrt{\frac{G M}{(R + h)}}$
So we can see that minimum height maximizes velocity that’s why speed is greatest when it is closest to the earth.

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