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Class 11 Physics — Chapter 9: Mechanical Properties of Solids Online Test

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Class 11 Physics: Mechanical Properties of Solids Online Test (Paper 1)

Welcome to Paper 1! This is your foundation to build confidence and get you ready to tackle the challenges ahead.

  • Total Questions: 20
  • Time Allotted: 30 minutes
  • Passing Score: 40%
  • Randomization: No
  • Certificate: No
  • Retake: Allowed
  • Price: 100% Free

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1 / 20

1. A material initially stressed to shows a stress of after 100 s at constant strain. What is the relaxation time ?

2 / 20

2. A boiler tube operates under stress of at . If the creep rate follows Norton’s law , what happens if stress doubles?

3 / 20

3. In an S–N curve (stress vs. number of cycles), what does the horizontal region represent?

4 / 20

4. In which of the following processes is strain hardening most beneficial?

5 / 20

5. Plastic deformation is accompanied by which atomic process?

6 / 20

6. For submarine hull design, which modulus is most relevant?

7 / 20

7. A material has Young’s modulus and bulk modulus . Find Poisson’s ratio .

8 / 20

8. A wire of length , area , elongates by under a load of . Find Young’s modulus.

9 / 20

9. A wire of length and area is stretched with stress of . If , calculate elongation.

10 / 20

10. What type of deformation occurs in the yield region?

11 / 20

11. Which industrial test uses Hooke’s law principle to check stiffness of materials?

12 / 20

12. A copper wire of length and cross-sectional area is subjected to a tensile force of . If , what is the elongation?

13 / 20

13. Which graph best represents the equation ?

14 / 20

14. The stress–strain graph in Hooke’s law region is:

15 / 20

15. A wire of length and cross-sectional area elongates by under a force of . What is the stress and strain?

16 / 20

16. Plasticity in solids refers to:

17 / 20

17. Which property is most important for designing wires used in electrical transmission?

18 / 20

18. Which of the following is an example of a linear elastic material?

19 / 20

19. A wire of length and area is subjected to a tensile force of . If its elongation is , what is the Young’s modulus of the material?

20 / 20

20. A steel wire of length and radius is subjected to a tensile force of . If Young’s modulus of steel is , what is the elongation of the wire?

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Class 11 Physics: Mechanical Properties of Solids Online Test (Paper 2)

Welcome to Paper 2! You’ve mastered the basics, and now it’s time to test your understanding with a more challenging set of questions.

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  • Total Questions: 30
  • Time Allotted: 45 minutes
  • Passing Score: 50%
  • Randomization: Yes
  • Certificate: No
  • Retake: Allowed
  • Price: 100% Free

Good luck! 👍

1 / 30

1. Which phenomenon occurs if a metal wire is stretched beyond its elastic limit?

2 / 30

2. Which of the following real-life factors demonstrate temperature affecting elasticity?

3 / 30

3. A steel wire of length and cross-sectional area is stretched by a force of . If , what is the strain?

4 / 30

4. Which of the following techniques increases creep resistance of metals?

5 / 30

5. Why is plastic deformation important in the process of metal forming?

6 / 30

6. The resistance of a body to a change in shape without a change in volume is measured by:

7 / 30

7. Which relation connects bulk modulus , Young’s modulus , and Poisson’s ratio ?

8 / 30

8. Why is elasticity important in making protective padding in sports gear?

9 / 30

9. A steel wire of length and radius is fixed at one end. A load of is applied at the free end. If the elongation is , calculate Young’s modulus.

10 / 30

10. In linear elastic deformation, which mathematical relation holds true?

11 / 30

11. What is the physical significance of Hooke’s law?

12 / 30

12. At high strain rates, metals tend to:

13 / 30

13. Why does annealing reduce the elasticity of metals?

14 / 30

14. Which material typically shows non-linear elastic deformation even at small strains?

15 / 30

15. Which material property is most important for aircraft components subjected to cyclic loading?

16 / 30

16. Which real-life example shows the importance of knowing tensile strength?

17 / 30

17. If creep rate is given by , and activation energy increases, what happens to creep rate?

18 / 30

18. In Searle’s experiment, why are two wires used (test wire and reference wire)?

19 / 30

19. A steel wire of length and radius is stretched by a force of . If , calculate the elongation.

20 / 30

20. Which of the following is an example of elasticity?

21 / 30

21. A steel wire of length and radius is clamped at one end and twisted by torque . If , find angle of twist.

22 / 30

22. What is the SI unit of stress?

23 / 30

23. Which metal typically shows a distinct yield point on its stress–strain curve?

24 / 30

24. For submarine hull design, which modulus is most relevant?

25 / 30

25. Why does fracture toughness improve with higher temperature in many metals?

26 / 30

26. A wire of length and area is subjected to a force of . If elongation is , calculate Young’s modulus.

27 / 30

27. Which of the following real-life examples obeys Hooke’s law most closely?

28 / 30

28. Elastomers like rubber have which type of stress–strain curve?

29 / 30

29. In the equation , what does represent?

30 / 30

30. Which of the following is an exception where elasticity increases with temperature?

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Class 11 Physics: Mechanical Properties of Solids Online Test (Paper 3)

Welcome to Paper 3! You’ve warmed up—now it's time to step up your game and conquer the challenge with tougher questions!

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  • Total Questions: 50
  • Time Allotted: 75 minutes
  • Passing Score: 70%
  • Randomization: Yes
  • Certificate: Yes
  • Retake: Allowed
  • Price: 100% Free

Good luck! 👍

1 / 50

1. Which of the following mathematical forms represents Hooke’s law?

2 / 50

2. In compression testing of concrete, Hooke’s law is applied up to:

3 / 50

3. What does the yield point indicate about a material?

4 / 50

4. In the elastic region of the stress–strain curve, the relationship between stress and strain is:

5 / 50

5. A material that is both malleable and ductile is:

6 / 50

6. What is the correct definition of elasticity in solids?

7 / 50

7. A steel wire of area fractures under a maximum load of . What is the breaking stress?

8 / 50

8. Which type of materials generally exhibit significant plastic deformation before fracture?

9 / 50

9. Why are ductile materials preferred in construction compared to brittle ones?

10 / 50

10. Why is it important to test materials under Hooke’s law conditions before use in construction?

11 / 50

11. Why is creep analysis critical in turbine blades?

12 / 50

12. In an S–N curve (stress vs. number of cycles), what does the horizontal region represent?

13 / 50

13. Which property is improved more effectively by annealing than strain hardening?

14 / 50

14. Why is strain hardening used in the manufacturing of copper wires?

15 / 50

15. Which of the following methods improves fracture resistance in metals?

16 / 50

16. A cantilever beam of length , breadth , depth is loaded at the free end with . If , calculate deflection at the free end.

17 / 50

17. Why is elasticity important in the manufacturing of automobile springs?

18 / 50

18. Which everyday example demonstrates plastic deformation?

19 / 50

19. Which of the following examples follows Hooke’s law most closely?

20 / 50

20. Which environmental factor commonly contributes to fracture in metals?

21 / 50

21. Which one of the following conditions will increase elasticity of a solid?

22 / 50

22. A wire of length is stretched by a load of . The energy stored per unit volume is . Find Young’s modulus if cross-sectional area = .

23 / 50

23. What is stress concentration, and how does it cause fracture?

24 / 50

24. Why is measurement of elastic moduli important in engineering?

25 / 50

25. How does knowledge of mechanical properties help in sports equipment design?

26 / 50

26. In the stress–strain curve of mild steel, which point is higher: yield strength or ultimate strength?

27 / 50

27. Why does fatigue failure occur in metals?

28 / 50

28. In automotive crash design, why are ductile materials preferred?

29 / 50

29. Which of the following materials is highly ductile?

30 / 50

30. If a wire of length and cross-sectional area is subjected to a tensile force , the elongation is given by:

31 / 50

31. Which of the following is an almost perfectly elastic material?

32 / 50

32. How does temperature affect the elasticity of metals?

33 / 50

33. A rod is subjected to uniform stress of . If volume = , Young’s modulus = , find strain energy stored.

34 / 50

34. Which modulus is relevant in calculating the speed of longitudinal sound waves in a solid?

35 / 50

35. What is plastic deformation?

36 / 50

36. Which law governs linear elastic deformation?

37 / 50

37. A copper wire and a steel wire of equal length and area are joined in parallel and subjected to a load of . If , ratio of extensions (steel:copper) is:

38 / 50

38. Hooke’s law is valid only:

39 / 50

39. What is the main difference between strain hardening and annealing?

40 / 50

40. In the relation , what happens to strain if Young’s modulus is very large?

41 / 50

41. Which factor primarily controls creep mechanism at very high temperatures (close to melting point)?

42 / 50

42. Which material property is most important for aircraft components subjected to cyclic loading?

43 / 50

43. Which engineering method is used to prevent crack growth in aircraft structures?

44 / 50

44. Which material typically shows non-linear elastic deformation even at small strains?

45 / 50

45. Which of the following is a dimensionless quantity?

46 / 50

46. At the breaking point, how does the material behaviour differ from plastic deformation?

47 / 50

47. A steel rod of length is fixed at both ends. A temperature rise of is produced. If coefficient of linear expansion and , calculate stress developed.

48 / 50

48. A wire of length and diameter is subjected to a load of . If Young’s modulus = , find the strain energy per unit volume.

49 / 50

49. Why does increasing applied stress accelerate creep rate?

50 / 50

50. Which modulus is relevant in calculating the speed of sound in a liquid?

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Practice Mechanical Properties of Solids MCQs
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Class 11 Physics — Chapter 9: Mechanical Properties of Solids Online Test

The Mechanical Properties of Solids Online Test helps Class 11 students understand how different materials behave under the action of forces. This chapter is not just theoretical — it connects Physics to the real world through concepts like stress, strain, elasticity, Young’s modulus, and Hooke’s law. Many students find this topic tricky at first, but once they start solving practical-based questions, it becomes one of the most scoring chapters in Physics.

These online tests are based on the NCERT Class 11 Physics Chapter 9 — Mechanical Properties of Solids and follow the latest CBSE pattern. Each test gives you an exam-like experience with multiple-choice questions, a timer, and instant results. You can attempt them anytime, anywhere, and track your progress with each paper.

By regularly attempting this Mechanical Properties of Solids Online Test, you’ll strengthen your understanding of elasticity and material behavior. Each question is selected carefully to test your clarity on formulas, graphs, and applications. Students who practice these papers consistently gain confidence and perform better in school exams, JEE, and NEET.

About this Online Test

The Chapter 9 Online Test is divided into three timed papers that gradually increase in level. You can start with basics, move to mixed difficulty, and finally challenge yourself with advanced-level problems.

  • Paper 1 — Fundamentals: 20 questions · 30 min · Pass ≥ 40%
  • Paper 2 — Concept Practice: 30 questions · 45 min · Pass ≥ 50% · Random questions each attempt
  • Paper 3 — Advanced Test: 50 questions · 75 min · Pass ≥ 70% · Certificate on passing

All papers are auto-graded and include a detailed answer review. Papers 2 and 3 offer new sets of questions every time you attempt, making your learning continuous and engaging.

Key Topics Covered (Mechanical Properties of Solids)

  • Elasticity and plasticity
  • Stress and strain — longitudinal, shear, and volumetric
  • Hooke’s law and stress–strain curve
  • Elastic moduli: Young’s modulus, bulk modulus, rigidity modulus
  • Poisson’s ratio and its significance
  • Elastic potential energy in a stretched wire
  • Applications of elasticity in daily life and industries

Why You Should Take This Test

Understanding mechanical properties through reading is not enough. You need to practice to remember formulas and learn when to apply them. This online test helps you:

  • Master formula-based and concept-based problems
  • Revise all important elasticity and stress-strain questions
  • Improve accuracy with time-based challenges
  • Get instant feedback and result analysis
  • Build confidence for board and competitive exams

Who Should Attempt

  • Class 11 CBSE/NCERT students revising Chapter 9
  • JEE/NEET aspirants focusing on mechanics-based questions
  • Students who find elasticity and modulus numericals confusing
  • Teachers looking for ready-to-use online chapter tests

Preparation Tips for Chapter 9

  • Memorize all elasticity formulas like Y = Stress / Strain, K = Volume Stress / Volume Strain, etc.
  • Understand the shape of the stress-strain graph and its regions.
  • Study the difference between elastic and plastic behavior of materials.
  • Attempt Paper 1 after reading NCERT; attempt Paper 2 & 3 for deeper understanding.
  • Revisit incorrect answers and revise related concepts from your notes.

Before You Start

  • Do not refresh or close the tab while taking the test.
  • Use Chrome or Edge browser for smooth performance.
  • Ensure a stable internet connection during the test.

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