Free Gravitation MCQs with Answers
265 Gravitation MCQs from Physics, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Newton’s law of universal gravitation relates the force between masses to their masses and separation, while gravitational field strength explains weight and orbital motion. The topic covers satellite velocity and period, escape ideas, weightlessness in free fall, and artificial gravity, which differs from ordinary gravitational attraction.
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- A. Falls down
- B. Remains stationary
- C. Goes up
- D. None of above
Explanation: The acceleration of the body does not depend on the mass (for freely falling). Hence both boy and ball have same acceleration.
Correct answer: Remains stationary- A. Kinetic Energy
- B. Potential Energy
- C. Momentum
- D. Acceleration
- E. All given options
Explanation: KE, PE and momentum will be different because they depend on mass. The acceleration of the object is independent tof mass rather only…
Correct answer: Acceleration- A. 0.431 m/s2
- B. 1.615 m/s2
- C. 2.431 m/s2
- D. 3.615 m/s2
- E. 4.431 m/s2
Explanation: Let M & M' be the mass of earth & moon. Also R & R' be their radius respectively.
Correct answer: 1.615 m/s2- A. Nm2/kg
- B. Nm2/kg2
- C. Nm/kg2
- D. Nm/kg
Explanation: Force =GM1M2\R2 [G]=[Force][R2]\[M1][M2] G=Nm2/(kg)2 G= Nm2/kg2
Correct answer: Nm2/kg2- A. Rotating the space craft
- B. Back and forth motion spacecraft
- C. Up and down movement of spacecraft
- D. Keeping the space craft stationary
- E. All of the above
Explanation: In space, it is possible to create "artificial gravity" by spinning your spacecraft or space station.
Correct answer: Rotating the space craft- A. M = 9.1 x 10^-31 kg
- B. M = 1.6027 x 10^-27 kg
- C. M = 5.98 x 10^24 kg
- D. M = 6.02 x 10^23 kg
- E. M = 3 x 10^3 kg
Explanation: By equating Newton's second law with his law of universal gravitation, and inputting for the acceleration the experimentally verified…
Correct answer: M = 5.98 x 10^24 kg- A. Becomes double
- B. Becomes one fourth
- C. Becomes one third
- D. Remains same
- E. Becomes half
Explanation: Let M be the mass of earth and R be the radius, we know, g=GM/R2 so, if diameter is doubled i.e.
Correct answer: Becomes one fourth- A. negative, positive
- B. positive, negative
- C. positive, positive
- D. negative, negative
- E. Insufficient Information
Explanation: When the work is done in the direction of the force then work done is said to be positive.
Correct answer: positive, negative- A. Universal Time
- B. Length of the day
- C. Time interval
- D. Solar day
Explanation: A solar day is time lnterval between two successlve appearance of the sun overhead.
Correct answer: Universal Time- A. 6.673 x 10^-9 N
- B. 7.71 x 10^-9 N
- C. 8.91 x 10^-9 N
- D. 9.91 x 10^-9 N
- E. 10.31 x 10^-9 N
Explanation: F = (G * m1 * m2) / r2 where F is the gravitational force, G is the gravitationalconstant (approximately 6.674 × 10-11 N m2/kg2), m1 and…
Correct answer: 6.673 x 10^-9 N- A. 66 x 10 -2 N
- B. 77 x 10 -7 N
- C. 81.9 x 10 -7 N
- D. 31.4 x 10^-6 N
- E. 667.3 x 10^-11 N
Explanation: According to gravitational law: F= G m1m2/ r2 F = (6.674x 10^-11)(10)(10)(1)2 F = 667.4x 10^-11 N Option E is correct.
Correct answer: 667.3 x 10^-11 N- A. 9.1 x 10^-8 N
- B. 7.1 x 10^-8 N
- C. 6.1 x 10^-8 N
- D. 3.5 x 10^-8 N
- E. 1.5 x 10^-8 N
Explanation: Given: m1=5kg m2=5kg r=0.33m G=6.673×10-11 Nm2/kg2 Formula: FG=Gm1m2/r2 FG=(6.673×10-11)(5)(5)/0.332 = 1.5×10-8N
Correct answer: 1.5 x 10^-8 N- A. Gravitational Force
- B. Coulomb's Force
- C. Magnetic Force
- D. Nuclear Force
Explanation: Satellites revolve around planets because the gravitational force of attraction between the satellites and the planets acts as a…
Correct answer: Gravitational Force- A. r2 = GMT2 / 4x2
- B. r2 = [GMT2 / 4x2 ] 1/3
- C. r = [GMT2 / 4x2 ] 1/3
- D. r = [GMT / 4x2 ] 1/3
Explanation: For a satellite, the gravitational force provides the centripetal force; therefore: Fg=Fc {where Fg is the gravitational force and Fc is…
Correct answer: r = [GMT2 / 4x2 ] 1/3- A. Falls down
- B. Remains stationary
- C. Falls behind him.
- D. None of above
Explanation: The acceleration of the body does not depend on the mass (for freely falling). Hence both boy and ball have same acceleration.
Correct answer: Remains stationary- A. Zero
- B. 2mg
- C. mg
- D. mg/2
Explanation: The apparent weight of the object is the force exerted on it by the elevator floor, which is equal to the net force acting on the…
Correct answer: Zero- A. mg + mv
- B. mg
- C. mg ― mv
- D. Zero
Explanation: The weight of an object is defined as the force of gravity on the object and is calculated as the mass times the acceleration of gravity…
Correct answer: mg- A. 900 N
- B. Zero
- C. 800 N
- D. 700 N
Explanation: If the elevator falls freely, the downward acceleration of the man in the elevator is: a = g Now, the force exerted by the floor on the…
Correct answer: Zero- A. 1.04W
- B. 1.02W
- C. 0.50W
- D. 0.96W
Explanation: Gravitational force has formula,F=GMm/R2Where G is constant, M is mass of earth ,m is mass of object and R is distance between earth's…
Correct answer: 0.96W- A. 4g
- B. 2g
- C. g
- D. g/4
Explanation: The unit "per ohm second" (Ω⁻¹s) is indeed equivalent to the unit "farad" (F), which is the SI unit of capacitance.
Correct answer: 2gGravitation MCQs: common questions
Are these Gravitation MCQs free?
Yes. All Gravitation MCQs from Physics are free on TestUstad, with unlimited attempts and no account needed. Nothing on this page is a sample or a trial.
How many Gravitation MCQs are on this page?
There are 265 Gravitation MCQs in the Physics bank, shown 20 to a page with the correct answer and an explanation on each.
Does every Gravitation MCQ have an explanation?
Yes. Each Gravitation question shows the correct option and a written explanation of why it is correct, so a wrong answer teaches you something rather than just being marked wrong.
Can I take a timed Gravitation test?
Yes. The practice button on this page starts a free Gravitation test drawn from the Physics bank. It marks each answer instantly, gives you a score at the end, and can be retaken as many times as you like.