MCQ Questions | Class 9 Science Chapter 10 | Gravitation with Answers

MCQ | Gravitation Class 9 | Part-1

Check the below NCERT MCQ Questions for Class 9 Science Chapter 10 Gravitation with Answers Pdf free download. MCQ Questions for Class 9 Science with Answers were prepared based on the latest exam pattern. We have Provided Gravitation Class 9 Science MCQs Questions with Answers to help students understand the concept very well.

Objective Question | NCERT Science Class 9

NCERT Solutions Class 9 Science
Book:	National Council of Educational Research and Training (NCERT)
Board:	Central Board of Secondary Education (CBSE)
Class:	9th
Subject:	Science
Chapter:	10 ( Part-1 )
Chapters Name:	Gravitation
Medium:	English

Ncert Solutions for Class 9 Science | Objective Type Questions

You can refer to NCERT Solutions for Class 9 Science Chapter 10 Gravitation to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

Gravitation | Class 9 Science | NCERT Solutions

Q1.	The earth and the moon are attracted to each other by gravitational force. The earth attracts the moon with a force that is:
	A. More than that exerted by the moon
	B. Same as that exerted by the moon
	C. Less than that exerted by the moon
	D. Not related to that exerted by the moon

Ans: Same as that exerted by the moon

Q2.	An apple and a stone dropped from certain height accelerates
	A. equally
	B. differently
	C. depending on density
	D. depends on the position of the Sun

Ans: equally

Q3.	According to Archimedes’ principle when a body is submerged in a liquid, its apparent weight
	A. decreases
	B. increases
	C. remains unchanged
	D. may increase or decrease depending upon the material of the body

Ans: decreases

Q4.	If upthrust U is equal to 1/4 the weight of the object in air, then the weight felt in the liquid is
	A. 1/4W
	B. 3/4W
	C. 1/2W
	D. 2 W

Ans: 3/4W

Q5.	The first law of motion introduced the concept of-
	A.Momentum
	B.Inertia
	C.Action and reactions
	D.Kinetic energy

Ans: Inertia

Q6.	According to first law of motion, the states of uniform motion and rest are ……
	A.Equal
	B.Unequal
	C.Non related
	D.None of these.

Ans: Equal

Q7.	Force is a physical quantity depends on
	A.Speed
	B.Mass
	C.Acceleration
	D.Both b and c

Ans: Both b and c

Q8.	If a particles of mass 8 kg is moving with constant velocity of 20 m/s then net force on that object will be.
	A.160 N
	B.20 N
	C.80 N
	D.0 N

Ans: 0 N

Q9.	If a ball of mass 200 gm is moving with 20 m/s then its momentum is
	A.40 kg m/s
	B.400 kg m/s
	C.4 Kg m/s
	D.0.4 kg m/s

Ans: 4 Kg m/s

Q10.	The SI unit of g is
	A.N m/kg
	B.N m²/kg
	C.N m² /kg²
	D.N² m² / kg²

Ans: N m² /kg²

Q11.	If a ball has mass 60 kg on earth then it’s mass on moon will be…
	A.10 kg
	B.40 kg
	C.0 kg
	D.60 kg

Ans: 60 kg

Q12.	A mass weighing W can float if the upthrust U is related as
	A. U > W
	B. U = W
	C. U < W
	D. U ≥ W

Ans: U > W

Q13.	The pressure exerted by man on earth is minimum when he
	A. sits
	B. stands on one foot
	C. stands on both feet
	D. lies on ground

Ans: lies on ground

Q14.	When a body floats in a liquid, its apparent weight is always
	A. less than the weight of the body
	B. more than the weight of the body
	C. equal to the weight of the body
	D. zero

Ans: zero

Q15.	Thrust exerted by an iron cuboid when placed on sand is equal to
	A. mass of cuboid
	B. mass per unit surface area
	C. weight of cuboid
	D. weight per unit surface area

Ans: weight of cuboid

Q16.	The gravitational force between two bodies does not depend on
	A. their separation
	B. their masses
	C. the product of their masses
	D. the medium between the two bodies

Ans: the medium between the two bodies

Q17.	Two objects of different masses falling freely near the surface of moon would
	A. have same velocities of any instant
	B. have different accelerations
	C. experience forces of different magnitudes
	D. undergo a change in their inertia

Ans: experience forces of different magnitudes

Q18.	School bags have a broader base to reduce
	A. pressure
	B. weight
	C. air resistance
	D. normal reaction

Ans: pressure

Q19.	Inverse square law means F α?
	A. 1/r
	B. 1/r²
	C. 1/r⁴
	D. 1/r³

Ans: 1/r²

Q20.	When a body is weighed in a liquid, the loss in weight is equal to
	A. weight of liquid displaced by the body
	B. weight of water displaced by the body
	C. weight of body in air
	D. half the weight of body in air

Ans: weight of liquid displaced by the body

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