- Amal Augustine
- December 17, 2025
Mastering Friction and Circular Motion MCQs: Ultimate & Elite Smart Physics Practice for Exams
Understanding friction and circular motion mcqs is essential for solving high-scoring physics numericals and MCQs in board and competitive exams. These friction and circular motion mcqs topics explain real-world phenomena such as vehicles skidding on curved roads, braking distance, rolling motion, and rocket propulsion.
Many friction and circular motion MCQs test how friction provides the necessary centripetal force for vehicles moving on curved roads, especially when banking is absent.In friction and circular motion mcqs numericals, friction often acts as a limiting factor that determines the maximum safe speed of a car taking a turn without skidding.Friction and circular motion MCQs on friction and circular motion frequently examine the balance between centripetal force mv2/rmv^2/r and frictional force μmg\mu mg to analyze motion on level and banked curves.
This blog post presents carefully selected friction and circular motion MCQs, focusing on concept clarity, numerical accuracy, and exam relevance. Each friction and circular motion mcqs question includes clear options with the correct answer placed below to make it for quick revision and self-assessment.
Friction and Circular Motion MCQs (with Answers Below)
1.
If the coefficient of friction between the rubber tyres and the road is 0.25, find the maximum speed of a car on a curve of radius 20 m (g = 9.8 m/s²).
A. 5 m/s
B. 7 m/s
C. 10 m/s
D. 14 m/s
Answer: B
2.
Vehicles are streamlined to reduce
A. Static friction
B. Kinetic friction
C. Sliding friction
D. Fluid friction
Answer: D
3.
Friction can perform
A. Positive work only
B. Zero work only
C. Negative work only
D. Positive, negative and zero work
Answer: D
4.
A block of mass 2 kg rests on a rough inclined plane of 30°. The coefficient of static friction is 0.7 (g = 10 m/s²). The frictional force is
A. 10 N
B. 7√3 N
C. 10√3 N
D. 7 N
Answer: B
5.
Which force is non-central and non-conservative?
A. Frictional force
B. Electric force
C. Gravitational force
D. Mechanical force
Answer: A
6.
Which of the following is a self-adjusting force?
A. Static friction
B. Limiting friction
C. Dynamic friction
D. Sliding friction
Answer: A
7.
A cyclist comes to a skidding stop in 10 m. The force by the road is 200 N opposite to motion. Work done by the road is
A. 2000 J
B. –2000 J
C. 20 J
D. –20 J
Answer: B
8.
How does the coefficient of friction change if normal reaction is halved?
A. Doubled
B. Halved
C. Unchanged
D. Cannot be predicted
Answer: C
9.
The retarding acceleration of a 400 kg car is 7.35 m/s². The coefficient of friction is
A. 0.55
B. 0.75
C. 0.70
D. 0.65
Answer: B
10.
The maximum speed of a car on a curve of radius 30 m with μ = 0.4 is
A. 10.84 m/s
B. 9.84 m/s
C. 8.84 m/s
D. 6.84 m/s
Answer: A
11.
A body sliding on an inclined plane with uniform velocity implies
A. Friction is zero
B. Acceleration is maximum
C. Net force is zero
D. Normal force is zero
Answer: C
12.
The motion of a rocket is based on conservation of
A. Angular momentum
B. Kinetic energy
C. Linear momentum
D. Mass
Answer: C
13.
Physical independence of forces is a consequence of
A. Third law
B. Second law
C. First law
D. None
Answer: C
14.
A rocket ejects gases at 50 g/s with speed 400 m/s. The thrust is
A. 22 dyne
B. 20 N
C. 20 dyne
D. 100 N
Answer: B
15.
A car takes a turn on a curved road. The maximum safe speed depends on
A. Mass only
B. Radius only
C. Radius and coefficient of friction
D. Area of tyres
Answer: C
16.
How will the coefficient of friction change if the normal reaction is halved?
A. Doubled
B. Halved
C. Unchanged
D. Cannot be predicted
Answer: C
17.
With increase of temperature, the frictional force acting between two surfaces generally
A. Increases
B. Remains the same
C. Decreases
D. Becomes zero
Answer: B
18.
What will be the maximum speed of a car on a road turn of radius 30 m if the coefficient of friction is 0.4?
(Take g = 9.8 m/s²)
A. 10.84 m/s
B. 9.84 m/s
C. 8.84 m/s
D. 6.84 m/s
Answer: A
19.
When an object slides down an inclined plane with uniform velocity, the net force acting on it is
A. Maximum
B. Minimum
C. Zero
D. Equal to its weight
Answer: C
20.
A body of weight 50 N is placed on a rough surface. If the force required to just move it is 30 N, the coefficient of friction is
A. 0.6
B. 1.2
C. 0.3
D. 1.67
Answer: A
21.
Force required to move a 1 kg block on a rough horizontal surface (µ = 0.1, g = 9.8 m/s²) is
A. 0.98 N
B. 0.49 N
C. 9.8 N
D. 4.9 N
Answer: A
22.
A force of 49 N just moves a block of wood weighing 10 kg on a rough surface. The coefficient of friction is
A. 1
B. 0.7
C. 0.5
D. 0
Answer: C
23.
The maximum speed of a car on a level road of radius 100 m (µ = 0.4) is
A. 10 m/s
B. 20 m/s
C. 30 m/s
D. 40 m/s
Answer: B
24.
When two surfaces are lubricated, friction
A. Increases
B. Decreases
C. Becomes zero
D. Becomes independent of load
Answer: B
25.
A block slides on a rough surface and comes to rest. The work done by friction is
A. Positive
B. Zero
C. Negative
D. Infinite
Answer: C
26.
The frictional force on a rolling cylinder is proportional to
A. Tangential force perpendicular to surface
B. Normal force perpendicular to surface
C. Normal force parallel to surface
D. Tangential force parallel to surface
Answer: C
27.
A car skids on a horizontal road because
A. Friction is maximum
B. Normal reaction is zero
C. Available friction is insufficient
D. Speed is constant
Answer: C
28.
Which friction is the least?
A. Static friction
B. Sliding friction
C. Rolling friction
D. Limiting friction
Answer: C
29.
The force of friction depends mainly on
A. Area of contact
B. Shape of surface
C. Nature of surfaces in contact
D. Speed of motion
Answer: C
30.
If a body moves with constant speed in a straight line, the frictional force is
A. Zero
B. Maximum
C. Balanced by applied force
D. Equal to weight
Answer: C
31.
Banking of roads is done to
A. Reduce friction
B. Increase speed
C. Provide required centripetal force
D. Avoid accidents only
Answer: C
32.
A body projected on a rough horizontal surface stops due to
A. Gravity
B. Normal reaction
C. Friction
D. Air resistance only
Answer: C
33.
Friction always acts
A. In direction of motion
B. Opposite to gravity
C. Opposite to relative motion or tendency of motion
D. Along normal
Answer: C
34.
The coefficient of friction is
A. A vector quantity
B. Depends on area
C. Dimensionless
D. Always greater than 1
Answer: C
35.
When a car moves on a curved path, friction provides
A. Tangential force
B. Gravitational force
C. Centripetal force
D. Normal force
Answer: C
36.
If friction were absent, a moving body would
A. Stop immediately
B. Move in a circle
C. Continue in uniform motion
D. Move downward
Answer: C
Conclusion
Mastering friction and circular motion MCQs requires a strong grip on forces, normal reaction, centripetal acceleration, and conservation laws. These friction and circular motion mcqs questions frequently appear in Class 9–12 exams, NEET, JEE, and state board papers, often in numerical form.
Regular practice of such concept-driven friction and circular motion MCQs helps aspirants avoid common mistakes related to signs, directions, and limiting conditions. A clear understanding of frictional forces and circular motion principles not only boosts exam confidence but also builds a solid foundation for advanced mechanics.
Numerical MCQs involving friction and circular motion mcqs help aspirants understand why increasing speed or decreasing friction increases the risk of skidding.These friction and circular motion MCQs reinforce the concept that friction can act towards the centre of the circular path, unlike its usual opposing role in linear motion.
Amal Augustine is the founder of ExQuizMe, a dynamic learning and quiz platform built to make education engaging, competitive, and fun. A passionate learner and an academic achiever, Amal completed his schooling at Government HSS Manjapra, graduating with 92.5% in Computer Science. He later earned his degree from St. Stephen’s College, University of Delhi, one of India’s most prestigious arts and science institutions.
Currently, Amal is pursuing his Master’s degree at National Sun Yat-sen University, Taiwan, where he continues to deepen his interest in research and technology. Throughout his school and college years, he won 50+ national-level interschool and collegiate quiz competitions, was
Beyond academics, Amal Augustine is an avid reader of science journals, a dedicated research student, and a technology enthusiast who loves programming and exploring the world of Computer Science. Through ExQuizMe, he aims to make learning accessible, enjoyable, and empowering for students across the globe.