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. A beam of rectangular cross-section breadth , depth , length , is loaded centrally with . Find the central deflection if .

2 / 30

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

3 / 30

3. Which statement about plastic deformation is correct?

4 / 30

4. A steel wire of length , radius is stretched by force . If energy stored is , find Young’s modulus.

5 / 30

5. What does the breaking point represent in a stress–strain curve?

6 / 30

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

7 / 30

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

8 / 30

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

9 / 30

9. A rod of length , diameter elongates by under a load of . Find Young’s modulus.

10 / 30

10. A steel rod of length , diameter , is subjected to a tensile force of . It elongates by . Calculate Young’s modulus.

11 / 30

11. Which fracture mechanics principle is applied in designing safe automobile tires?

12 / 30

12. A steel rod of length , cross-section , is subjected to stress . If , calculate elongation.

13 / 30

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

14 / 30

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

15 / 30

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

16 / 30

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

17 / 30

17. Which modulus is most relevant for designing helmets?

18 / 30

18. 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?

19 / 30

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

20 / 30

20. If stress relaxation follows , what is the stress after ?

21 / 30

21. A wire of length and cross-sectional area is stretched by under a load. If , what is the applied force?

22 / 30

22. Why is strain hardening used in making armor plates?

23 / 30

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

24 / 30

24. In forging metals, which type of deformation is primarily involved?

25 / 30

25. A brass wire of length , cross-sectional area , is subjected to a force of . If Young’s modulus of brass is , find the elongation.

26 / 30

26. In tall buildings, why is elasticity of materials carefully considered?

27 / 30

27. Which property does UTS measure in a material?

28 / 30

28. A rod fixed at both ends is heated by . If , , calculate thermal stress developed.

29 / 30

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

30 / 30

30. Which of the following engineering structures must be tested for Hooke’s law compliance to avoid failure?

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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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Get new questions with every attempt

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

Good luck! 👍

1 / 50

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

2 / 50

2. A rod of length , area , and Young’s modulus is stretched by . Calculate the applied force.

3 / 50

3. Why is cold rolling of steel sheets done in industries?

4 / 50

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

5 / 50

5. A steel rod of length , area , coefficient of linear expansion , is heated by . If ends are fixed, calculate thermal stress.

6 / 50

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

7 / 50

7. What is the slope of the stress–strain curve in the elastic region?

8 / 50

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

9 / 50

9. A turbine blade operates at . If the activation energy for creep is , and gas constant , what factor reduces creep rate when temperature drops to ?

10 / 50

10. Which type of strain is produced when a wire is stretched by a force along its length?

11 / 50

11. What does a higher value of Young’s modulus imply about a material?

12 / 50

12. According to Norton’s law, steady-state creep rate is proportional to:

13 / 50

13. If Young’s modulus is and shear modulus is , find Poisson’s ratio.

14 / 50

14. What branch of physics does the chapter "Mechanical Properties of Solids" mainly deal with?

15 / 50

15. Why are alloys generally tougher than pure metals?

16 / 50

16. A steel rod of length , cross-section , is subjected to stress . If , calculate elongation.

17 / 50

17. Why is mild steel preferred for making machine parts that undergo repeated loading?

18 / 50

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

19 / 50

19. Why is creep analysis critical in turbine blades?

20 / 50

20. Which property is opposite to elasticity?

21 / 50

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

22 / 50

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

23 / 50

23. In the elastic region, the relation between stress () and strain () is given by:

24 / 50

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

25 / 50

25. Which property makes rubber suitable for making shock absorbers?

26 / 50

26. What is the correct formula for shear strain?

27 / 50

27. Why is ductile plastic deformation preferred in structural materials?

28 / 50

28. In which type of materials is stress relaxation most significant at room temperature?

29 / 50

29. A rod of length , diameter elongates by under a load of . Find Young’s modulus.

30 / 50

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

31 / 50

31. Elasticity of a material depends on:

32 / 50

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

33 / 50

33. A wire of length and cross-sectional area is subjected to a force of . If Young’s modulus is , what is the elongation?

34 / 50

34. Why is elasticity important in the process of forging?

35 / 50

35. Which property of materials is essential in designing pole vaulting poles?

36 / 50

36. Which pair of properties are considered opposite to each other in solids?

37 / 50

37. Why are single-crystal superalloys used in turbine blades?

38 / 50

38. Which of the following best represents non-linear elastic behavior?

39 / 50

39. What happens to the stress–strain curve after UTS is reached?

40 / 50

40. A wire of original length and diameter is stretched by under a load of . Calculate Young’s modulus.

41 / 50

41. Which of the following materials shows a very well-defined yield point?

42 / 50

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

43 / 50

43. Which property is most important in designing helmets and protective gear?

44 / 50

44. A steel rod of length , diameter , is subjected to a tensile force of . It elongates by . Calculate Young’s modulus.

45 / 50

45. What does Hooke’s law state?

46 / 50

46. What is the dimension of Young’s modulus ?

47 / 50

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

48 / 50

48. In designing airbags for cars, which property is most relevant?

49 / 50

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

50 / 50

50. Which mechanical property is most important in making automobile tires?

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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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