JEE Main 2025 (Online) 7th April Evening Shift | Gravitation Question 1 | Physics

1

JEE Main 2025 (Online) 7th April Evening Shift

MCQ (Single Correct Answer)

+4

-1

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A): The radius vector from the Sun to a planet sweeps out equal areas in equal intervals of time and thus areal velocity of planet is constant.

Reason (R): For a central force field the angular momentum is a constant.

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

A

(A) is not correct but (R) is correct

B

Both (A) and (R) are correct but (R) is not the correct explanation of (A)

C

Both (A) and (R) are correct and (R) is the correct explanation of (A)

D

(A) is correct but (R) is not correct

2

JEE Main 2025 (Online) 3rd April Morning Shift

MCQ (Single Correct Answer)

+4

-1

$$ \text { Match the LIST-I with LIST-II } $$

List - I		List - II
A.	$$ \text { Gravitational constant } $$	I.	$$ \left[\mathrm{LT}^{-2}\right] $$
B.	$$ \text { Gravitational potential energy } $$	II.	$$ \left[\mathrm{L}^2 \mathrm{~T}^{-2}\right] $$
C.	$$ \text { Gravitational potential } $$	III.	$$ \left[\mathrm{ML}^2 \mathrm{~T}^{-2}\right] $$
D.	$$ \text { Acceleration due to gravity } $$	IV.	$$ \left[\mathrm{M}^{-1} \mathrm{~L}^3 \mathrm{~T}^{-2}\right] $$

Choose the correct answer from the options given below:

A

A-IV, B-III, C-II, D-I

B

A-II, B-IV, C-III, D-I

C

A-I, B-III, C-IV, D-II

D

A-III, B-II, C-I, D-IV

3

JEE Main 2025 (Online) 28th January Evening Shift

MCQ (Single Correct Answer)

+4

-1

Earth has mass 8 times and radius 2 times that of a planet. If the escape velocity from the earth is 11.2 km/s, the escape velocity in km/s from the planet will be:

A

8.4

B

11.2

C

5.6

D

2.8

4

JEE Main 2025 (Online) 24th January Morning Shift

MCQ (Single Correct Answer)

+4

-1

A satellite is launched into a circular orbit of radius ' R ' around the earth. A second satellite is launched into an orbit of radius 1.03 R . The time period of revolution of the second satellite is larger than the first one approximately by

A

$3 \%$

B

$2.5 \%$

C

$4.5 \%$

D

$9 \%$