Multiple Choice Questions

1. Physical Quantities and Measurement ⇔ (MCQs From the Board)
2. Kinematics ⇔ (MCQs From the Board)
3. Dynamics – I ⇔ (MCQs From the Board)
4. Dynamics – II ⇔ (MCQs From the Board)
5. Pressure and Deformation in Solids ⇔ (MCQs From the Board)
6. Work and Energy ⇔ (MCQs From the Board)
7. Density and Temperature ⇔ (MCQs From the Board)
8. Magnetism ⇔ (MCQs From the Board )
9. Nature of Science and Physics ⇔ (MCQs From the Board)

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Physics 9 MCQs – Multiple Choice Questions with Answers (Chapters 1-9)

Physics is a fascinating subject that explains the fundamental principles of the universe. For 9th-grade students, multiple-choice questions (MCQs) provide an excellent way to test their understanding and enhance problem-solving skills. Below, we have compiled important MCQs from Chapters 1 to 9, covering key concepts in physics.

Chapter 1: Physical Quantities and Measurement

1. Which of the following is a base quantity?
a) Speed
b) Force
c) Time
d) Power
Answer: c) Time

2. What is the SI unit of length?
a) Meter
b) Kilometer
c) Centimeter
d) Millimeter
Answer: a) Meter

3. A measuring instrument should have which of the following properties?
a) Accuracy
b) Precision
c) Sensitivity
d) All of the above
Answer: d) All of the above

Chapter 2: Kinematics

4. Which of the following is a scalar quantity?
a) Velocity
b) Displacement
c) Speed
d) Acceleration
Answer: c) Speed

5. The slope of a velocity-time graph represents:
a) Speed
b) Acceleration
c) Distance
d) Displacement
Answer: b) Acceleration

6. If a body moves with uniform velocity, its acceleration is:
a) Zero
b) Increasing
c) Constant but not zero
d) Decreasing
Answer: a) Zero

Chapter 3: Dynamics – I

7. Newton’s first law is also known as:
a) Law of Acceleration
b) Law of Action and Reaction
c) Law of Inertia
d) Law of Momentum
Answer: c) Law of Inertia

8. Which of the following is the correct formula for force?
a)
b)
c)
d)
Answer: a)

Chapter 4: Dynamics – II

9. Momentum is given by the formula:
a)
b)
c)
d)
Answer: a)

10. Which of the following is an example of Newton’s third law?
a) A ball rolling on the ground stops after some time
b) A rocket launching into space
c) A stone falling from a height
d) A car moving with uniform velocity
Answer: b) A rocket launching into space

Chapter 5: Pressure and Deformation in Solids

11. Pressure is defined as:
a) Force per unit mass
b) Force per unit volume
c) Force per unit area
d) Mass per unit volume
Answer: c) Force per unit area

12. The SI unit of pressure is:
a) Newton
b) Pascal
c) Joule
d) Watt
Answer: b) Pascal

13. Which principle explains how hydraulic brakes work?
a) Archimedes’ Principle
b) Newton’s First Law
c) Pascal’s Principle
d) Bernoulli’s Principle
Answer: c) Pascal’s Principle

Chapter 6: Work and Energy

14. Work is done when:
a) A force is applied, but no displacement occurs
b) A force is applied and displacement occurs in the direction of the force
c) No force is applied, but the object moves
d) The object remains stationary
Answer: b) A force is applied and displacement occurs in the direction of the force

15. What is the SI unit of energy?
a) Joule
b) Newton
c) Watt
d) Pascal
Answer: a) Joule

16. Kinetic energy is given by the formula:
a)
b)
c)
d)
Answer: b)

Chapter 7: Density and Temperature

17. Density is defined as:
a) Mass per unit volume
b) Volume per unit mass
c) Force per unit area
d) Work per unit time
Answer: a) Mass per unit volume

18. The SI unit of density is:
a) kg/m²
b) kg/m³
c) N/m²
d) m³/kg
Answer: b) kg/m³

19. The boiling point of water in Kelvin is:
a) 100K
b) 273K
c) 373K
d) 473K
Answer: c) 373K

Chapter 8: Magnetism

20. Magnets have how many poles?
a) One
b) Two
c) Three
d) Four
Answer: b) Two

21. The region around a magnet where it exerts force is called:
a) Electric field
b) Gravitational field
c) Magnetic field
d) Electromagnetic wave
Answer: c) Magnetic field

22. Which material is used for making permanent magnets?
a) Copper
b) Soft iron
c) Aluminum
d) Steel
Answer: d) Steel

Chapter 9: Nature of Science and Physics

23. The first step in the scientific method is:
a) Experimentation
b) Observation
c) Conclusion
d) Theory formulation
Answer: b) Observation

24. A scientific theory is:
a) A guess
b) A proven fact
c) An explanation supported by experiments and evidence
d) A law of nature
Answer: c) An explanation supported by experiments and evidence

25. Which of the following is a branch of physics?
a) Biology
b) Chemistry
c) Mechanics
d) Medicine
Answer: c) Mechanics

Conclusion

MCQs help students revise and assess their understanding of physics topics efficiently. The above questions cover key concepts from chapters 1 to 9 and provide a solid foundation for exams. Keep practicing and enjoy learning physics! 🚀