Gravitation Practice Questions
NEET · Physics · 1551 free MCQs with instant results and detailed explanations.
1551
Total
364
Easy
708
Medium
479
Hard
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Topics in Gravitation
Kepler's Laws
230
Gravitational Force
232
Gravitational Potential
220
Satellites
215
Law of Gravitation
218
Gravitational Field and Potential
218
Escape Velocity
218
Sample Questions from Gravitation
Here are 10 sample questions. Start a quiz to get randomized questions with scoring.
Q1
Easy
What is the gravitational force between two objects of masses 5 kg and 10 kg separated by a distance of 2 m?
A.
1.67 x 10^-7 N
B.
1.25 x 10^-6 N
C.
2.50 x 10^-5 N
D.
1.11 x 10^-8 N
Show Answer & Explanation
Correct Answer: B
Using the formula F = G(m1*m2)/r^2, where G = 6.67 x 10^-11 N(m/kg)^2, we calculate F = 6.67 x 10^-11 * (5*10)/(2^2) = 1.25 x 10^-6 N.
Q2
Easy
If the distance between two masses is halved, what happens to the gravitational force between them?
A.
It remains the same
B.
It doubles
C.
It quadruples
D.
It halves
Show Answer & Explanation
Correct Answer: C
According to Newton's law of gravitation, if the distance is halved, the gravitational force increases by a factor of 4 (F is inversely proportional to the square of the distance).
Q3
Easy
What is the gravitational acceleration at the surface of the Earth?
A.
9.8 m/s²
B.
10 m/s²
C.
8.5 m/s²
D.
12 m/s²
Show Answer & Explanation
Correct Answer: A
The gravitational acceleration, denoted as 'g', at the surface of the Earth is approximately 9.8 m/s², derived from the mass and radius of the Earth.
Q4
Medium
Two objects, A and B, with masses m1 = 5 kg and m2 = 10 kg, are placed 2 meters apart in space. What is the gravitational force between them? (Use G = 6.67 × 10^-11 N m²/kg²)
A.
1.67 × 10^-10 N
B.
1.67 × 10^-9 N
C.
3.34 × 10^-10 N
D.
3.34 × 10^-9 N
Show Answer & Explanation
Correct Answer: C
The gravitational force can be calculated using Newton's law of gravitation: F = G * (m1 * m2) / r². Here, F = (6.67 × 10^-11 N m²/kg²) * (5 kg * 10 kg) / (2 m)² = 3.34 × 10^-10 N.
Q5
Medium
What is the gravitational force acting between two masses of 5 kg and 10 kg separated by a distance of 2 m? (G = 6.674 × 10^-11 N m²/kg²)
A.
1.67 × 10^-10 N
B.
1.67 × 10^-9 N
C.
3.34 × 10^-10 N
D.
3.34 × 10^-9 N
Show Answer & Explanation
Correct Answer: B
Using the formula F = G(m1*m2)/r², we find F = (6.674 × 10^-11)(5)(10)/(2²) = 1.67 × 10^-9 N.
Q6
Medium
If the gravitational force between two objects is doubled, what happens to the distance between them, assuming their masses remain constant?
A.
it doubles
B.
it remains the same
C.
it halves
D.
it quadruples
Show Answer & Explanation
Correct Answer: C
Gravitational force is inversely proportional to the square of the distance. To double the force, the distance must be halved.
Q7
Medium
What happens to the gravitational force between two objects if the mass of one object is tripled while the distance remains unchanged?
A.
it triples
B.
it increases nine times
C.
it decreases
D.
it remains constant
Show Answer & Explanation
Correct Answer: A
Since gravitational force is directly proportional to the product of the masses, tripling one mass will triple the force.
Q8
Hard
Consider two objects, A and B, with masses 2 kg and 3 kg respectively, separated by a distance of 5 meters. What is the gravitational force between them? (G = 6.67 × 10^-11 N m²/kg²)
A.
8.0 × 10^-11 N
B.
4.0 × 10^-11 N
C.
1.6 × 10^-11 N
D.
6.67 × 10^-10 N
Show Answer & Explanation
Correct Answer: A
Using the formula F = G * (m1 * m2) / r², we get F = (6.67 × 10^-11) * (2 * 3) / (5²) = 8.0 × 10^-11 N.
Q9
Hard
If the distance between two identical objects is halved, what happens to the gravitational force between them?
A.
It becomes double.
B.
It becomes quadruple.
C.
It remains the same.
D.
It becomes half.
Show Answer & Explanation
Correct Answer: B
The gravitational force is inversely proportional to the square of the distance. Halving the distance results in a fourfold increase.
Q10
Hard
What is the gravitational acceleration experienced by an object on the surface of a planet with a radius of 6000 km and mass of 5.972 × 10^24 kg?
A.
9.8 m/s²
B.
6.7 m/s²
C.
4.5 m/s²
D.
8.1 m/s²
Show Answer & Explanation
Correct Answer: A
Using g = G * M / r², we substitute G, M, and r to find g = 9.8 m/s².
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Gravitation — NEET Physics Practice Questions Online
This page contains 1551 practice MCQs for the chapter Gravitation in NEET Physics. The questions are organized by difficulty — 364 easy, 708 medium, 479 hard — so you can choose the right level for your preparation.
Every question includes a detailed explanation to help you understand the concept, not just memorize answers. Take a timed quiz to simulate exam conditions, or practice at your own pace with no time limit. This chapter covers 7 topics, giving you comprehensive coverage of the entire chapter.