Which of the following statements are co...

Which of the following statements are correct about a satellite moving around a planet in an elliptical orbit ?

Its time period is proportional to `r^(3)`

Its areal velocuty is constant

Its angular momentum about every in space is constant

Its mechanical energy is conserved

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The correct Answer is:

B, D

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Which of the following statement is correct about satellites?

A satellite cannot move in a stable orbit in a plane passing through the earth's centre.

Geostationary satellites are launched in the equatorial plane.

We can use just one geostationary satellite for global communication around the globe

The speed of satellite increases with an increase in the radius of its orbit.

Mechanical energy of a planet is negative

Orbit of a planet must be circular

A planet cannot leave its orbit whatever the energy supplied to it

A planet can leave its orbit whatever the energy supplied to it

its areal velocity is constant

its angular momentum is constant

its mechanical energy is constant

its time period of proprtional to `r^(3)`