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.
Last updated
265 questions · page 14 of 27
131. The average mass per unit volume (or average density) of the earth is:
- A. 3 times the density of water
- B. 4 times the density of water
- C. 5.5 times the density of water
- D. Equal times the density of water
Explanation: The Explanation for this question will be added soon!
Correct answer: 5.5 times the density of water132. The force of gravitation between two bodies 2m apart and each of 1000 kg is:
- A. 1.6 x 10^-7 N
- B. 3.34 x 10^-8 N
- C. 1.67 x 10^-5 N
- D. 3.34 x 10^-5N
Explanation: The Explanation for this question will be added soon!
Correct answer: 1.67 x 10^-5 N133. The value of g at a height equal to the radius of the earth from its surface is:
- A. g' = g
- B. g' = g/4
- C. g' = g/9
- D. g' = g/2
Explanation: The Explanation for this question will be added soon!
Correct answer: g' = g/4134. A man in an elevator ascending with an acceleration will conclude that his weight has:
- A. Increased
- B. Decreased
- C. Reduced to zero
- D. Remained constant
Explanation: The Explanation for this question will be added soon!
Correct answer: Increased135. A man in an elevator descending with an acceleration will conclude that his weight has:
- A. Increased
- B. Decreased
- C. Remained constant
- D. Reduced to zero
Explanation: The Explanation for this question will be added soon!
Correct answer: Decreased136. The gravitational force of attraction between the earth and a body of mass 1kg on the surface:
- A. 9.8 N
- B. 9.8 Dyne
- C. 980 N
- D. 98 N
Explanation: The Explanation for this question will be added soon!
Correct answer: 9.8 N137. The acceleration due to gravity above the earth surface would be half of its value on the surface of earth at an altitude of (R = 4000 miles):
- A. 1600 miles
- B. 200 miles
- C. 1000 miles
- D. 400 miles
Explanation: The Explanation for this question will be added soon!
Correct answer: 1600 miles138. A satellite moving round the earth constitutes:
- A. An inertial frame of reference
- B. Non-inertial frame
- C. Neither inertial nor non-inertial
- D. Both inertial and non-inertial
Explanation: The Explanation for this question will be added soon!
Correct answer: Non-inertial frame139. A body of 2kg is suspended from the ceiling of an elevator moving up with an acceleration 'g' its apparent weight in the elevator will be:
- A. 9.8 N
- B. 19.6 N
- C. 129.4 N
- D. 39.2 N
Explanation: The Explanation for this question will be added soon!
Correct answer: 39.2 N140. Pull of the earth on a mass of 20 kg on the surface of earth is:
- A. 20 N
- B. 196 N
- C. 19.6 N
- D. 1960 N
Explanation: The Explanation for this question will be added soon!
Correct answer: 196 N