JEE Main 2021 (Online) 18th March Evening Shift | Gravitation Question 107 | Physics

The angular momentum of a planet of mass M moving around the sun in an elliptical orbit is $${\overrightarrow L }$$. The magnitude of the areal velocity of the planet is :

$${{2L} \over M}$$

$${{L} \over 2M}$$

$${{L} \over M}$$

$${{4L} \over M}$$

JEE Main 2021 (Online) 18th March Morning Shift

MCQ (Single Correct Answer)

-1

The time period of a satellite in a circular orbit of radius R is T. The period of another satellite in a circular orbit of radius 9R is :

9 T

27 T

12 T

3 T

JEE Main 2021 (Online) 17th March Evening Shift

MCQ (Single Correct Answer)

-1

A geostationary satellite is orbiting around an arbitrary planet 'P' at a height of 11R above the surface of 'P', R being the radius of 'P'. The time period of another satellite in hours at a height of 2R from the surface of 'P' is _________. 'P' has the time period of 24 hours.

$$6\sqrt 2 $$

$${6 \over {\sqrt 2 }}$$

JEE Main 2021 (Online) 16th March Morning Shift

MCQ (Single Correct Answer)

-1

The maximum and minimum distances of a comet from the Sun are 1.6 $$\times$$ 10¹² m and 8.0 $$\times$$ 10¹⁰ m respectively. If the speed of the comet at the nearest point is 6 $$\times$$ 10⁴ ms^$$-$$1, the speed at the farthest point is :

3.0 $$\times$$ 10³ m/s

6.0 $$\times$$ 10³ m/s

1.5 $$\times$$ 10³ m/s

4.5 $$\times$$ 10³ m/s

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