NEET
- Exam
- NEET
- Subject
- Physics
- Chapter
- Gravitation
NEET · Physics · Gravitation
Choose the correct statement(s) from the following:- (A) The...
Choose the correct statement(s) from the following:-
(A) The magnitude of the gravitational force between two bodies of mass 1 kg each and separated by a distance of 1 m is 9.8 N.
(B) Higher the value of escape velocity for a planet, higher is the abundance of lighter gases in its atmosphere.
(C) Force of friction arises due to gravitational attraction.
(D) The gravitational force of attraction between two bodies of ordinary mass is not noticeable because the value of the gravitational constant is extremely small.
Options
- AA, B
- BB, C, D
- CD
- DB, D
Correct answer
D. B, D
Step-by-step solution
(A) The magnitude of force between 1 Kg bodies is (6.67 \times 10^{-11} \mathrm{~N})
(B) is correct, if escape velocity for a planet is high, the thermal speeds of lighter gases are less than the escape velocity.
(\therefore) Lighter gases are not able to escape.
(C) is wrong; friction force is electromagnetic in nature.
(D) is correct.