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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

Good luck! 👍

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. In designing high-temperature components like boiler tubes, creep resistance is improved by:

2 / 30

2. Which of the following statements is correct about strain hardening?

3 / 30

3. A steel rod of length , cross-sectional area , is subjected to tensile force . If , calculate strain energy stored.

4 / 30

4. Why is glass not preferred in structural engineering for load-bearing purposes?

5 / 30

5. Which elastic modulus relates pressure and change in volume?

6 / 30

6. In material science, why is Young’s modulus important for engineers?

7 / 30

7. A material has creep rate described by . If stress is doubled, how does creep rate change?

8 / 30

8. What is bulk modulus of a material?

9 / 30

9. The importance of stress-strain study in construction lies in:

10 / 30

10. A copper wire is stretched beyond its elastic limit. What type of deformation occurs?

11 / 30

11. Which mechanical property is most important for designing earthquake-resistant buildings?

12 / 30

12. A wire of original length elongates by under load. If stress is , what is Young’s modulus from testing?

13 / 30

13. A steel wire of radius and length is clamped at one end and twisted through an angle of . Calculate the shear modulus if the torque applied is .

14 / 30

14. Why does annealing reduce the elasticity of metals?

15 / 30

15. Why is fracture toughness higher in ductile materials than brittle materials?

16 / 30

16. Why is study of permanent deformation important in engineering?

17 / 30

17. A steel rod of length , cross-section , is subjected to tensile force . Calculate the strain energy stored in the rod. .

18 / 30

18. Which property makes elastic mouthguards effective in protecting athletes’ teeth?

19 / 30

19. Which statement best summarizes the comparison between strain hardening and annealing?

20 / 30

20. Which of the following correctly represents the order of points on a stress–strain curve for mild steel?

21 / 30

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

22 / 30

22. In the torsion pendulum method, the time period is given by:

23 / 30

23. What does the stress–strain relationship describe?

24 / 30

24. At the elastic limit, which of the following is true?

25 / 30

25. Which equation represents stress relaxation behavior in viscoelastic materials (Maxwell model)?

26 / 30

26. What is the correct definition of strain?

27 / 30

27. Which point on a stress–strain curve indicates the beginning of plastic deformation?

28 / 30

28. Which of the following is a characteristic of plastic deformation?

29 / 30

29. Why are strain-hardened aluminum sheets used in aircraft manufacturing?

30 / 30

30. Which of the following equations gives the deflection of a beam under central load ?

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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. What is meant by a perfectly plastic body?

2 / 50

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

3 / 50

3. Why does fatigue failure occur in metals?

4 / 50

4. A steel wire of length , area of cross-section , and Young’s modulus is subjected to a tensile force . What is the longitudinal strain?

5 / 50

5. What is shear modulus (also called modulus of rigidity) defined as?

6 / 50

6. What does toughness of a material represent?

7 / 50

7. 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:

8 / 50

8. Which region of the stress–strain curve obeys Hooke’s law?

9 / 50

9. 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.

10 / 50

10. Why are materials with high ductility chosen in earthquake-resistant building design?

11 / 50

11. A steel wire has cross-sectional area . If its UTS is , what is the maximum load it can withstand?

12 / 50

12. A rod of length , cross-sectional area , is compressed longitudinally by . If Young’s modulus , find applied force.

13 / 50

13. Hooke’s law is valid only:

14 / 50

14. Which property of steel makes it ideal for building bridges and skyscrapers?

15 / 50

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

16 / 50

16. Why is elasticity important in engineering materials?

17 / 50

17. In Hooke’s law, stress is directly proportional to strain only up to:

18 / 50

18. In jet engines, why is fatigue resistance as important as fracture toughness?

19 / 50

19. The length of a steel wire increases by when a load of is applied. If the same load is applied to a copper wire of same dimensions, elongation is . What is the ratio of Young’s moduli of steel to copper?

20 / 50

20. In the elastic region, the slope of the stress–strain curve is equal to:

21 / 50

21. If a wire of length and cross-sectional area (Young’s modulus ) is elongated by , what is the tensile force applied?

22 / 50

22. In material testing, stress relaxation helps to determine:

23 / 50

23. How does increasing temperature generally affect plastic deformation in metals?

24 / 50

24. The importance of stress-strain study in construction lies in:

25 / 50

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

26 / 50

26. Which formula is used to calculate strain energy per unit volume at yield point?

27 / 50

27. Which mechanical property is most important for designing earthquake-resistant buildings?

28 / 50

28. A beam of square cross-section side , length , is loaded centrally with . If , find central deflection.

29 / 50

29. Which application of plastic deformation is used in the creation of aluminum foils?

30 / 50

30. A steel component operates at with creep rate . If temperature rises to , creep rate increases to . Which factor is most responsible?

31 / 50

31. What is the primary mechanism of strain hardening in metals?

32 / 50

32. Which property is opposite to elasticity?

33 / 50

33. How does temperature affect the elasticity of metals?

34 / 50

34. Which property allows a metal to be hammered into thin sheets without breaking?

35 / 50

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

36 / 50

36. Which of the following correctly defines normal stress?

37 / 50

37. Which of the following relations is correct for Young’s modulus in terms of stress and strain?

38 / 50

38. Which property of a material is most directly measured using Hooke’s law in a tensile test?

39 / 50

39. In material testing, why is it crucial to know the breaking point of a solid?

40 / 50

40. Which physical quantity is defined as force per unit area?

41 / 50

41. The SI unit of all elastic moduli (Y, G, K) is:

42 / 50

42. At which point on the stress–strain curve does the material bear the maximum stress?

43 / 50

43. A copper wire of length and cross-sectional area is stretched by under a load. If Young’s modulus of copper is , what is the applied force?

44 / 50

44. Which design principle is applied in aircraft fuselages to prevent crack propagation?

45 / 50

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

46 / 50

46. Which of the following best describes permanent deformation?

47 / 50

47. A solid cube is subjected to equal compressive forces from all sides. What strain is produced?

48 / 50

48. What is stress relaxation?

49 / 50

49. Which modulus of elasticity is most important for beams under bending loads?

50 / 50

50. Which property of solids explains why railway tracks have gaps left between them?

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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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