Gravitation
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Preview questions (no answers)
- 1.
Newton's derivation of the inverse square law of gravity was based on which of Kepler's laws?
A.First Law
B.Second Law
C.Third Law
D.All three laws
- 2.
The Harmonic Law is another name for:
A.Kepler's First Law
B.Kepler's Second Law
C.Kepler's Third Law
D.Newton's Second Law
- 3.
What is the eccentricity of a perfectly circular orbit?
A.0
B.1
C.0.5
D.Infinite
Download the worksheet for Gravitation - Kepler's Laws to practice offline. It includes additional chapter-level practice questions.
Universal Law of Gravitation
SubtopicUniversal Law of Gravitation under Gravitation for Grade 11 CBSE.
Preview questions (no answers)
- 1.
The range of gravitational force is:
A.Very short (atomic scale)
B.Medium (up to 1 km)
C.Infinite
D.Zero
- 2.
Which of the following statements about gravitational force is FALSE?
A.It is an action-reaction pair
B.It obeys the inverse square law
C.It can be shielded by placing a lead screen between masses
D.It acts along the line joining the centers of the two masses
- 3.
If the product of two masses is doubled, the gravitational force between them:
A.Is halved
B.Remains the same
C.Is doubled
D.Is quadrupled
Download the worksheet for Gravitation - Universal Law of Gravitation to practice offline. It includes additional chapter-level practice questions.
Acceleration due to Gravity (above and below Earth's surface)
SubtopicAcceleration due to Gravity (above and below Earth's surface) under Gravitation for Grade 11 CBSE.
Preview questions (no answers)
- 1.
Which of the following describes the change in as one goes from the surface to the center?
A.It decreases linearly
B.It increases linearly
C.It decreases as
D.It remains constant
- 2.
If we represent the distance from the center of Earth as , then for , is proportional to:
A.B.C.D. - 3.
The value of at the surface of Earth is . If the Earth's mass is doubled and its radius is doubled, the new value of will be:
A.B.C.D.
Download the worksheet for Gravitation - Acceleration due to Gravity (above and below Earth's surface) to practice offline. It includes additional chapter-level practice questions.
Gravitational Potential Energy
SubtopicGravitational Potential Energy under Gravitation for Grade 11 CBSE.
Preview questions (no answers)
- 1.
If a rock is dropped into a deep well, its gravitational potential energy ________ as it falls.
A.Decreases
B.Increases
C.Stays the same
D.Becomes positive
- 2.
Gravitational potential energy is zero when the distance is:
A.Zero
B.The radius of the Earth
C.Infinite
D.At the center of the Earth
- 3.
If a body of mass is at the center of a hollow spherical shell of mass and radius , its gravitational potential energy relative to infinity is:
A.Zero
B.C.D.Infinite
Download the worksheet for Gravitation - Gravitational Potential Energy to practice offline. It includes additional chapter-level practice questions.
Escape Speed and Orbital Velocity
SubtopicEscape Speed and Orbital Velocity under Gravitation for Grade 11 CBSE.
Preview questions (no answers)
- 1.
In the formula , the 'r' represents:
A.The radius of the Earth
B.The height from the surface
C.The distance from the center of the Earth
D.The diameter of the Earth
- 2.
A body is projected vertically upwards. At what point does its total mechanical energy become zero (considering potential energy at infinity is zero)?
A.At the surface of Earth
B.At maximum height
C.At infinity (if projected with escape velocity)
D.It is always positive
- 3.
When a satellite is moving in a circular orbit, the work done by the gravitational force is:
A.Positive
B.Negative
C.Zero
D.Maximum
Download the worksheet for Gravitation - Escape Speed and Orbital Velocity to practice offline. It includes additional chapter-level practice questions.