Gravitation MCQ Questions Class 11 Physics Chapter 8
NCERT MCQ Questions for Class 11 Physics Chapter 8 Gravitation. Gravitation MCQ Questions with Answers from Class 11 Physics.
Gravitation MCQ Questions Class 11 Physics Chapter 8
Gravitation Multiple Choice Questions with Answers Class 11 Physics Chapter 8 PDF is available.
1) All planets move in an elliptical orbits with the sun situated at one of the foci, is called as
a) Law of areas
b) Law of periods
c) Law of orbits
d) Law of gravitation
Ans: c) law of orbits
2) The line which joins any planet to the sun sweeps out equal area in equal interval of time, this is called as
a) Law of areas
b) Law of periods
c) Law of orbits
d) Law of gravitation
Ans: a) law of areas
3) The square of time period of revolution of a planet is proportional to the cube of the semi major axis of the ellipse traced out by the planet, this is called as
a) Law of areas
b) Law of periods
c) Law of orbits
d) Law of gravitation
Ans: b) law of periods
4) The time period of revolution of earth around the sun in years is
a) 0.24
b) 1.88
c) 1
d) 84
Ans: c) 1
5) The time period of revolution of mercury around the sun in years is
a) 1
b) 0.24
c) 0.615
d) 1.88
Ans: b) 0.24
6) The time period of revolution of mars around the sun in years is
a) 1.88
b) 1
c) 0.24
d) 0.615
Ans: a) 1.88
7) Gravitation is the
a) Radial force
b) Magnetic force
c) Central force
d) None
Ans: c) Central force
8) The gravitational force is attractive because
a) F is along r
b) F is not along r
c) F is along -r
d) None
Ans: c) F is along -r
9) The gravitational force is
a) Attractive
b) Central
c) Both a and b
d) None
Ans: c) both a and b
10) The numerical value of gravitational constant is
a) 6.67*1011 N/Kg2
b) 6.66*10-11 N/kg2
c) Both a and b
d) None
Ans: b) 6.67*10-11N/kg2
- In case you have missed:- Previous Chapter MCQ Questions
11) As we go down the earth’s surface the acceleration due to gravity decreases by factor
a) (1 – d)
b) (1 – d/Re)
c) (1 + d/Re)
d) (1 + d)
Ans: b) (1 – d/Re)
12) The escape speed or escape velocity is given by
a) √2gRe
b) 11.2km/s
c) Both a and b
d) None
Ans: c) both a and b
13) The escape speed for the moon is found to be
a) 2.3km/s
b) 11.2km/s
c) Both a and b
d) None
Ans: a) 2.3km/s
14) Earth satellites revolve around the earth in
a) Circular orbits
b) Elliptical orbits
c) Both a and b
d) None
Ans: c) both a and b
15) While considering motion of an object under the gravitational force of another object which of the following quantities are conserved.
a) Angular momentum
b) Total mechanical energy
c) Linear momentum
d) Both a and b
Ans: d) both a and b
16) While considering the motion of an object under the gravitational force of another object which of the following quantities are not conserved.
a) Angular momentum
b) Total mechanical energy
c) Linear momentum
d) Both a and b
Ans: c) linear momentum
17) Angular momentum conservation leads to
a) Law of gravitation
b) Kepler’s first law
c) Kepler’s second law
d) Kepler’s third law
Ans: c) Kepler’s second law
18) An astronaut experiences weightlessness in a space satellite because
a) Both astronaut and satellite are in free fall towards the earth
b) Both astronaut and satellite are not in free fall towards the earth
c) Both a and b
d) None
Ans: a) both astronaut and satellite are in free fall towards the earth
19) The gravitational potential energy associated with two particles separated by distance r is given by
a) V = – G m1 m2/r
b) V = + G m1 m2/ r
c) V = Gm1 m2 / r2
d) None
Ans: a) V = – G m1 m2 / r
20) The gravitational force on a particle inside a spherical shell is
a) Negative
b) Positive
c) Zero
d) None
Ans: c) zero
21) Gravitational shielding is
a) Possible
b) Not possible
c) Both a and b
d) None
Ans: b) not possible
- In case you have missed:- Next Chapter MCQ Questions