Explore topic-wise MCQs in Physics.

This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.

1.

For a satellite executing an elliptical orbit around a planet, its minimum potential energy is at the perigee.

A. True
B. False
Answer» B. False
Discussion
2.

A satellite of mass “m” orbits a planet “P” in an elliptical orbit. The satellite is then transferred to another circular orbit of radius “r” as shown in the figure. Which of the following hold true in this scenario?

A. The kinetic energy of the satellite is increased and the potential energy of the satellite is decreased in the new orbit
B. The kinetic energy of the satellite is decreased and the potential energy of the satellite is increased in the new orbit
C. Both kinetic and potential energy of the satellite is decreased on the new orbit
D. Both kinetic and potential energy of the satellite is increased on the new orbit
Answer» C. Both kinetic and potential energy of the satellite is decreased on the new orbit
Discussion
3.

If the kinetic energy of a satellite is halved, its orbital radius becomes _____

A. 1/2 times
B. 2 times
C. 4 times
D. infinity
Answer» C. 4 times
Discussion
4.

Assume that a satellite executes perfectly circular orbits around a perfectly circular sphere. The work done by the satellite in 1 complete revolution is _____

A. (1/2) x (G x m x M)/(R+h)
B. – (G x m x M)/(R+h)
C. – (1/2) x (G x m x M)/(R+h)
D. 0
Answer» E.
Discussion
5.

For a satellite with an elliptical orbit and not a circular orbit, the potential energy varies with time.

A. True
B. False
Answer» B. False
Discussion
6.

For a satellite with an elliptical orbit and not a circular orbit, the kinetic energy varies with time.

A. True
B. False
Answer» B. False
Discussion
7.

The figure shows the variation of energy with the orbital radius “r” of a satellite around a spherical planet.

A. The curve A denotes the variation of kinetic energy with radius “r”
B. The curve A denotes the variation of potential energy with radius “r”
C. The curve A denotes the variation of total energy with radius “r”
D. The curve A denotes the variation of sum of potential energy and kinetic energy with radius “r”
Answer» B. The curve A denotes the variation of potential energy with radius “r”
Discussion
8.

A satellite revolves around the earth in a circular orbit with a velocity “v”. What is the total energy of the satellite? Let “m” be the mass of the satellite.

A. – (m*v2)/2
B. (m*v2)/2
C. (3*m*v2)/2
D. – (m*v2)
Answer» B. (m*v2)/2
Discussion
9.

A satellite of mass “m” is in a circular orbit of radius 1.5R around the earth of radius R. How much energy is required to move it to an orbit of radius 2R?

A. -(G*M*m)/12R
B. (G*M*m)/12R
C. -(G*M*m)/4R
D. (G*M*m)/4R
Answer» B. (G*M*m)/12R
Discussion
10.

What is the total energy possessed by a satellite of mass “m” orbiting above the earth of mass “M” and radius “R” at a height “h”?

A. [(G*M*m)/2*(R+h)]
B. -[(G*M*m)/2*(R+h)]
C. [(G*M*m)/(R+h)]
D. -[(G*M*m)/(R+h)]
Answer» C. [(G*M*m)/(R+h)]
Discussion
11.

What is the magnitude of the ratio of KE and PE of a satellite revolving around a planet in a circular orbit of radius “R”?

A. 1:4
B. 1:2
C. 2:1
D. 3:2
Answer» C. 2:1
Discussion