SEBA Class 9 Science Chapter 11 Work and Energy MCQs (2026–27) – Assam Eduverse
The SEBA Class 9 Science Chapter 11 Work and Energy MCQs (2026–27) are prepared strictly according to the latest ASSEB syllabus and updated board examination pattern. These SEBA Class 9 Science Chapter 11 Work and Energy MCQs include important objective questions, numerical-based MCQs, and concept-oriented practice sets designed for effective board exam preparation.
Prepared by subject experts of Assam Eduverse, these seba class 9 science chapter 11 mcqs focus on key topics such as work done by a force, kinetic energy, potential energy, law of conservation of energy, power, commercial unit of energy, and mechanical energy. Practicing these work and energy mcqs class 9 seba and assam board class 9 science objective questions strengthens conceptual clarity and numerical accuracy.
Regular revision of these ASSEB Class 9 Science Important MCQs ensures strong preparation for the 2026–27 board examination and enhances performance in MCQ-based assessments.
SEBA Class 9 Science Chapter 11 Work and Energy MCQs – ASSEB 2026–27 Board Exam Practice
Table of Contents
Q1. In science, work is said to be done when:
a) A person is tired after pushing a wall
b) A force acts on an object but there is no displacement
c) A force acts on an object and the object is displaced
d) An object moves without any force acting on it
Answer: c) A force acts on an object and the object is displaced
Q2. If a force acts on an object but there is no displacement, the work done is:
a) Positive
b) Negative
c) Zero
d) Maximum
Answer: c) Zero
Q3. The unit of work in SI system is:
a) Newton
b) Joule
c) Watt
d) Pascal
Answer: b) Joule
Q4. One joule is equal to:
a) 1 N/m
b) 1 N × 1 m
c) 1 kg × 1 m
d) 1 kg/m
Answer: b) 1 N × 1 m
Q5. Work done is positive when:
a) Force acts opposite to displacement
b) Force acts perpendicular to displacement
c) Force acts in the direction of displacement
d) No force acts
Answer: c) Force acts in the direction of displacement
Q6. Work done is negative when:
a) Force acts in the direction of displacement
b) Force acts opposite to displacement
c) There is no displacement
d) Force is zero
Answer: b) Force acts opposite to displacement
Q7. An object having the capacity to do work is said to possess:
a) Power
b) Force
c) Energy
d) Speed
Answer: c) Energy
Q8. The unit of energy is:
a) Joule
b) Watt
c) Newton
d) m/s
Answer: a) Joule
Q9. Kinetic energy depends upon:
a) Only mass
b) Only velocity
c) Mass and velocity
d) Height only
Answer: c) Mass and velocity
Q10. The formula for kinetic energy is:
a) mgh
b) mv
c) ½mv²
d) mg
Answer: c) ½mv²
Q11. If the velocity of a body is doubled, its kinetic energy becomes:
a) Double
b) Half
c) Four times
d) Same
Answer: c) Four times
Q12. Potential energy of an object at height h is given by:
a) mv²
b) mgh
c) mg/h
d) mh
Answer: b) mgh
Q13. Gravitational potential energy depends upon:
a) Mass only
b) Height only
c) g only
d) Mass, height and g
Answer: d) Mass, height and g
Q14. The law of conservation of energy states that energy can:
a) Be created
b) Be destroyed
c) Neither be created nor destroyed
d) Be lost permanently
Answer: c) Neither be created nor destroyed
Q15. The sum of kinetic energy and potential energy is called:
a) Heat energy
b) Mechanical energy
c) Chemical energy
d) Light energy
Answer: b) Mechanical energy
Q16. Power is defined as:
a) Work done
b) Force × distance
c) Rate of doing work
d) Energy stored
Answer: c) Rate of doing work
Q17. The SI unit of power is:
a) Joule
b) Watt
c) Newton
d) Pascal
Answer: b) Watt
Q18. One watt is equal to:
a) 1 J
b) 1 J/s
c) 1 N
d) 1 kg m/s
Answer: b) 1 J/s
Q19. 1 kilowatt hour is equal to:
a) 1000 J
b) 3600 J
c) 3.6 × 10⁶ J
d) 3.6 × 10³ J
Answer: c) 3.6 × 10⁶ J
Q20. When an object falls freely towards the ground, its potential energy:
a) Increases
b) Decreases
c) Remains constant
d) Becomes zero immediately
Answer: b) Decreases
Q21. Assertion: Work done is zero when displacement is zero.
Reason: Work is equal to force × displacement.
a) Both A and R are true and R is the correct explanation
b) Both A and R are true but R is not the correct explanation
c) A is true but R is false
d) A is false but R is true
Answer: a) Both A and R are true and R is the correct explanation
Q22. Assertion: A moving object possesses kinetic energy.
Reason: Kinetic energy depends on velocity of the object.
a) Both A and R are true and R is the correct explanation
b) Both A and R are true but R is not the correct explanation
c) A is true but R is false
d) A is false but R is true
Answer: a) Both A and R are true and R is the correct explanation
Q23. Assertion: The potential energy of an object increases with height.
Reason: Potential energy is given by mgh.
a) Both A and R are true and R is the correct explanation
b) Both A and R are true but R is not the correct explanation
c) A is true but R is false
d) A is false but R is true
Answer: a) Both A and R are true and R is the correct explanation
Q24. Assertion: Power is the same as energy.
Reason: Power is the rate of doing work.
a) Both A and R are true and R is the correct explanation
b) Both A and R are true but R is not the correct explanation
c) A is true but R is false
d) A is false but R is true
Answer: d) A is false but R is true
Q25. Assertion: In free fall, total mechanical energy remains constant.
Reason: Energy is conserved during transformation.
a) Both A and R are true and R is the correct explanation
b) Both A and R are true but R is not the correct explanation
c) A is true but R is false
d) A is false but R is true
Answer: a) Both A and R are true and R is the correct explanation
Q26. Assertion: The work done by gravity on a satellite moving around the earth is zero.
Reason: The force of gravity acts perpendicular to the direction of motion of the satellite.
a) Both A and R are true and R is the correct explanation
b) Both A and R are true but R is not the correct explanation
c) A is true but R is false
d) A is false but R is true
Answer: a) Both A and R are true and R is the correct explanation
Q27. Assertion: If velocity of a body becomes zero, its kinetic energy becomes zero.
Reason: Kinetic energy depends on square of velocity.
a) Both A and R are true and R is the correct explanation
b) Both A and R are true but R is not the correct explanation
c) A is true but R is false
d) A is false but R is true
Answer: a) Both A and R are true and R is the correct explanation
Q28. Assertion: Potential energy depends upon the reference level chosen.
Reason: Potential energy is always absolute and independent of position.
a) Both A and R are true and R is the correct explanation
b) Both A and R are true but R is not the correct explanation
c) A is true but R is false
d) A is false but R is true
Answer: c) A is true but R is false
Q29. Assertion: When an object falls freely, its kinetic energy increases.
Reason: Its potential energy decreases and transforms into kinetic energy.
a) Both A and R are true and R is the correct explanation
b) Both A and R are true but R is not the correct explanation
c) A is true but R is false
d) A is false but R is true
Answer: a) Both A and R are true and R is the correct explanation
Q30. Assertion: 1 kW h is a unit of power.
Reason: 1 kW h is equal to 3.6 × 10⁶ J.
a) Both A and R are true and R is the correct explanation
b) Both A and R are true but R is not the correct explanation
c) A is true but R is false
d) A is false but R is true
Answer: d) A is false but R is true
Q31. Work is done when:
i) Force acts on an object
ii) Object is displaced
iii) Force and displacement are in the same direction
iv) Displacement is zero
a) i, ii and iii
b) i and ii
c) ii and iv
d) i, ii, iii and iv
Answer: a) i, ii and iii
Q32. Kinetic energy depends upon:
i) Mass
ii) Velocity
iii) Square of velocity
iv) Height
a) i and ii
b) i, ii and iii
c) ii and iv
d) i, ii, iii and iv
Answer: b) i, ii and iii
Q33. The unit joule can be expressed as:
i) N m
ii) kg m² s⁻²
iii) J s
iv) W s
a) i and ii
b) i, ii and iv
c) ii and iii
d) i, ii, iii and iv
Answer: b) i, ii and iv
Q34. Examples of potential energy are:
i) Stretched rubber band
ii) Raised object
iii) Moving car
iv) Compressed spring
a) i and ii
b) i, ii and iv
c) ii and iii
d) i, ii, iii and iv
Answer: b) i, ii and iv
Q35. Mechanical energy includes:
i) Kinetic energy
ii) Potential energy
iii) Heat energy
iv) Light energy
a) i and ii
b) i, ii and iii
c) ii and iv
d) i, ii, iii and iv
Answer: a) i and ii
Q36. Work done is zero when:
i) Displacement is zero
ii) Force is zero
iii) Force is perpendicular to displacement
iv) Object is stationary
a) i and ii
b) i, ii and iii
c) ii and iv
d) i, ii, iii and iv
Answer: b) i, ii and iii
Q37. Power depends upon:
i) Work done
ii) Time taken
iii) Force only
iv) Rate of energy transfer
a) i and ii
b) i, ii and iv
c) ii and iii
d) i, ii, iii and iv
Answer: b) i, ii and iv
Q38. In free fall motion:
i) Potential energy decreases
ii) Kinetic energy increases
iii) Total mechanical energy remains constant
iv) Total energy becomes zero
a) i and ii
b) i, ii and iii
c) ii and iv
d) i, ii, iii and iv
Answer: b) i, ii and iii
Q39. 1 kW h is equal to:
i) 1000 W × 3600 s
ii) 3.6 × 10⁶ J
iii) 3600 J
iv) 1 unit of electricity
a) i and ii
b) i, ii and iv
c) ii and iii
d) i, ii, iii and iv
Answer: b) i, ii and iv
Q40. When an object is lifted upward:
i) Work is done against gravity
ii) Potential energy increases
iii) Kinetic energy increases continuously
iv) Energy is transferred to the object
a) i and ii
b) i, ii and iv
c) ii and iii
d) i, ii, iii and iv
Answer: b) i, ii and iv
Q41. Match the following:
| Column A | Column B |
|---|---|
| a) Work | 1. 1 J/s |
| b) Energy | 2. Capacity to do work |
| c) Power | 3. Force × displacement |
| d) 1 Watt | 4. Rate of doing work |
a–3, b–2, c–4, d–1
Answer: a–3, b–2, c–4, d–1
Q42. Match the following:
| Column A | Column B |
|---|---|
| a) Kinetic energy | 1. mgh |
| b) Potential energy | 2. ½mv² |
| c) Mechanical energy | 3. Sum of KE and PE |
| d) Gravitational potential energy | 4. Energy due to motion |
a–4, b–1, c–3, d–1
Answer: a–4, b–1, c–3, d–1
Q43. Match the following:
| Column A | Column B |
|---|---|
| a) Positive work | 1. Force opposite to displacement |
| b) Negative work | 2. 1 N × 1 m |
| c) Zero work | 3. Force in direction of displacement |
| d) 1 Joule | 4. No displacement |
a–3, b–1, c–4, d–2
Answer: a–3, b–1, c–4, d–2
Q44. Match the following:
| Column A | Column B |
|---|---|
| a) 1 kW | 1. 3.6 × 10⁶ J |
| b) 1 kW h | 2. 1000 W |
| c) 1 J | 3. 1 J/s |
| d) 1 W | 4. 1 N m |
a–2, b–1, c–4, d–3
Answer: a–2, b–1, c–4, d–3
Q45. Match the following:
| Column A | Column B |
|---|---|
| a) Falling object | 1. Kinetic energy |
| b) Stretched rubber band | 2. Potential energy |
| c) Running athlete | 3. Increasing KE |
| d) Raised stone | 4. Gravitational PE |
a–3, b–2, c–1, d–4
Answer: a–3, b–2, c–1, d–4
Q46. Match the following:
| Column A | Column B |
|---|---|
| a) Unit of work | 1. Watt |
| b) Unit of power | 2. Joule |
| c) Commercial unit of energy | 3. kW h |
| d) Energy transformation | 4. Change of form of energy |
a–2, b–1, c–3, d–4
Answer: a–2, b–1, c–3, d–4
Q47. Match the following:
| Column A | Column B |
|---|---|
| a) Law of conservation of energy | 1. Power |
| b) Mechanical energy | 2. Energy |
| c) Rate of doing work | 3. KE + PE |
| d) Capacity to do work | 4. Energy can neither be created nor destroyed |
a–4, b–3, c–1, d–2
Answer: a–4, b–3, c–1, d–2
Q48. Match the following:
| Column A | Column B |
|---|---|
| a) mg | 1. Power |
| b) mgh | 2. Weight |
| c) ½mv² | 3. Potential energy |
| d) W/t | 4. Kinetic energy |
a–2, b–3, c–4, d–1
Answer: a–2, b–3, c–4, d–1
Q49. Match the following:
| Column A | Column B |
|---|---|
| a) 1 unit of electricity | 1. Watt |
| b) 1000 W | 2. kW h |
| c) 1 J/s | 3. Capacity to do work |
| d) Energy | 4. 1 kW |
a–2, b–4, c–1, d–3
Answer: a–2, b–4, c–1, d–3
Q50. Match the following:
| Column A | Column B |
|---|---|
| a) Free fall | 1. KE increases |
| b) Satellite motion | 2. Zero work by gravity |
| c) Object at rest at height | 3. Potential energy |
| d) Moving bullet | 4. Kinetic energy |
a–1, b–2, c–3, d–4
Answer: a–1, b–2, c–3, d–4
SEBA Class 9 Science Chapter 11 Work and Energy MCQs (2026–27) Important Objective Questions
The SEBA Class 9 Science Chapter 11 Work and Energy MCQs are prepared strictly as per the latest ASSEB syllabus 2026–27. These SEBA Class 9 Science Chapter 11 Work and Energy MCQs include conceptual objective questions, numerical MCQs, and board-oriented practice sets.
Students preparing for the board examination should regularly practice SEBA Class 9 Science Chapter 11 Work and Energy MCQs. These seba class 9 science chapter 11 mcqs cover important topics such as work done when force is applied, kinetic energy formula, potential energy formula, conservation of energy, and calculation of power.
The work and energy mcqs class 9 seba provided here are prepared by subject experts to ensure alignment with the latest board exam pattern. These ASSEB class 9 science important MCQs help students understand numerical problem-solving and conceptual application clearly.
Regular revision of SEBA Class 9 Science Chapter 11 Work and Energy MCQs along with assam board class 9 science objective questions improves conceptual clarity, numerical accuracy, and board exam performance in the 2026–27 ASSEB examination.
Frequently Asked Questions (FAQ)
1. Are these SEBA Class 9 Science Chapter 11 Work and Energy MCQs based on the latest syllabus?
Yes, these SEBA Class 9 Science Chapter 11 Work and Energy MCQs follow the latest ASSEB syllabus for 2026–27.
2. Are these seba class 9 science chapter 11 mcqs helpful for board exam preparation?
Yes, these seba class 9 science chapter 11 mcqs are designed according to the latest board exam pattern.
3. Do work and energy mcqs class 9 seba include numerical problems?
Yes, work and energy mcqs class 9 seba include numerical and conceptual application questions.
4. Who prepared these ASSEB class 9 science important MCQs?
These ASSEB class 9 science important MCQs are prepared by subject experts of Assam Eduverse.
5. Are assam board class 9 science objective questions from Work and Energy frequently asked?
Yes, important assam board class 9 science objective questions from this chapter are frequently asked in examinations.
6. Which important topics are covered in Chapter 11 MCQs?
Topics include work done by a force, kinetic energy, potential energy, conservation of energy, and power.
7. Can regular practice of SEBA Class 9 Science Chapter 11 Work and Energy MCQs improve scores?
Yes, regular practice improves numerical accuracy, conceptual clarity, and board exam performance.
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