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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. 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 .

2 / 30

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

3 / 30

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

4 / 30

4. What is the effect of tempering on quenched steel compared to strain hardening?

5 / 30

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

6 / 30

6. How does the nature of the material affect elasticity?

7 / 30

7. A rod is subjected to uniform stress of . Volume = . . Find strain energy stored.

8 / 30

8. Why is rubber used in grips of cricket bats and tennis rackets?

9 / 30

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

10 / 30

10. Which of the following statements best distinguishes proportionality limit and elastic limit?

11 / 30

11. What does Hooke’s law state?

12 / 30

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

13 / 30

13. Why is silicone rubber used in making prosthetic limbs?

14 / 30

14. Between steel and rubber, which is more elastic in terms of Young’s modulus?

15 / 30

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

16 / 30

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

17 / 30

17. The ratio in Hooke’s law corresponds to:

18 / 30

18. Plasticity in solids refers to:

19 / 30

19. Which of the following always lies before the elastic limit on a stress–strain curve?

20 / 30

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

21 / 30

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

22 / 30

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

23 / 30

23. For the above material (Q542), calculate bulk modulus .

24 / 30

24. Which law governs linear elastic deformation?

25 / 30

25. Which phenomenon is associated with plastic flow in metals?

26 / 30

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

27 / 30

27. Which heat treatment method involves heating followed by slow cooling to soften metals?

28 / 30

28. Which of the following correctly compares strain hardening and annealing in terms of dislocation density?

29 / 30

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

30 / 30

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

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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 environmental factor commonly contributes to fracture in metals?

2 / 50

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

3 / 50

3. Hooke’s law fails when:

4 / 50

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

5 / 50

5. Which of the following best represents a case of elastic deformation?

6 / 50

6. Why is titanium alloy used in bone implants?

7 / 50

7. Why are metals heated before forging or rolling?

8 / 50

8. Why does ductile fracture occur more slowly than brittle fracture?

9 / 50

9. If creep strain is given by , where and , find strain after 10 hours.

10 / 50

10. A cube of side is acted upon by a tangential force of on one of its faces. If the face area is , what is the shear stress?

11 / 50

11. What is strain hardening?

12 / 50

12. Why does a spring return to its original length after compression?

13 / 50

13. Which modulus is related to compressibility of a material?

14 / 50

14. A wire elongates when a load of is applied. If its length is , cross-sectional area , calculate .

15 / 50

15. A wire of length , radius , is stretched by force . If elongation is , find Young’s modulus.

16 / 50

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

17 / 50

17. Why does fatigue failure occur in metals?

18 / 50

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

19 / 50

19. If a material has Young’s modulus and Poisson’s ratio , what is its shear modulus ?

20 / 50

20. A steel wire and a copper wire of same length and cross-sectional area are joined in series and loaded with 100 N. If elongation of steel = , what is elongation of copper if ?

21 / 50

21. Who proposed Hooke’s law?

22 / 50

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

23 / 50

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

24 / 50

24. Which formula defines shear stress?

25 / 50

25. Why is annealing important for materials after strain hardening in manufacturing?

26 / 50

26. If a material is stressed just beyond its elastic limit, what happens?

27 / 50

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

28 / 50

28. Which of the following statements is true regarding the three elastic moduli?

29 / 50

29. A steel rod of cross-sectional area is subjected to tensile stress of . If Young’s modulus of steel is , find elongation of the rod of length .

30 / 50

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

31 / 50

31. How does the presence of impurities affect the elasticity of solids?

32 / 50

32. If a wire of length elongates by under a load of and cross-sectional area , find Young’s modulus.

33 / 50

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

34 / 50

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

35 / 50

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

36 / 50

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

37 / 50

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

38 / 50

38. Why does increasing applied stress accelerate creep rate?

39 / 50

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

40 / 50

40. In the equation , what does represent?

41 / 50

41. Why is hot rolling of steel easier than cold rolling?

42 / 50

42. Why is strain hardening applied in the manufacture of springs?

43 / 50

43. What is meant by a perfectly plastic body?

44 / 50

44. A wire of length and radius is stretched under a force of . If the increase in length is , calculate Young’s modulus.

45 / 50

45. Which property of solids is responsible for the permanent bending of a metal rod after applying a strong force?

46 / 50

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

47 / 50

47. A steel wire of radius , length , is twisted through angle . If torque required = , calculate shear modulus.

48 / 50

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

49 / 50

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

50 / 50

50. Drawing copper into wires is possible because:

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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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