JEE Main 2023 (Online) 6th April Evening Shift | Gravitation Question 44 | Physics

The weight of a body on the surface of the earth is $$100 \mathrm{~N}$$. The gravitational force on it when taken at a height, from the surface of earth, equal to one-fourth the radius of the earth is:

50 N

64 N

25 N

100 N

JEE Main 2023 (Online) 6th April Evening Shift

MCQ (Single Correct Answer)

-1

Choose the incorrect statement from the following:

The linear speed of a planet revolving around the sun remains constant.

When a body falls towards earth, the displacement of earth towards the body is negligible.

The speed of satellite in a given circular orbit remains constant.

For a planet revolving around the sun in an elliptical orbit, the total energy of the planet remains constant.

JEE Main 2023 (Online) 6th April Morning Shift

MCQ (Single Correct Answer)

-1

Given below are two statements : one is labelled as Assertion $$\mathbf{A}$$ and the other is labelled as Reason $$\mathbf{R}$$.

Assertion A : Earth has atmosphere whereas moon doesn't have any atmosphere.

Reason R : The escape velocity on moon is very small as compared to that on earth.

In the light of the above statements, choose the correct answer from the options given below:

$$\mathbf{A}$$ is false but $$\mathbf{R}$$ is true

Both $$\mathbf{A}$$ and $$\mathbf{R}$$ are correct but $$\mathbf{R}$$ is NOT the correct explanation of $$\mathbf{A}$$

Both $$\mathbf{A}$$ and $$\mathbf{R}$$ are correct and $$\mathbf{R}$$ is the correct explanation of $$\mathbf{A}$$

$$\mathbf{A}$$ is true but $$\mathbf{R}$$ is false

JEE Main 2023 (Online) 6th April Morning Shift

MCQ (Single Correct Answer)

-1

A planet has double the mass of the earth. Its average density is equal to that of the earth. An object weighing $$\mathrm{W}$$ on earth will weigh on that planet:

$$2^{2 / 3} \mathrm{~W}$$

$$2 \mathrm{~W}$$

$$2^{1 / 3} \mathrm{~W}$$

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