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CBSE Class 11 (Science) Mechanical Properties of Solids and Fluids — practice questions — page 7

Explore 257 free Mechanical Properties of Solids and Fluids questions in CBSE Class 11 (Science) Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Mechanical Properties of Solids and Fluids questions and exercises with answers

Showing questions 181–210 of 257.

Elastomers are a class of solids that do not obey:Read the answer and worked solution →Metals have large Young's moduli, so they need a large force to produce a:Read the answer and worked solution →Wood, bone, concrete and glass have Young's moduli that are:Read the answer and worked solution →For a system in equilibrium the bulk modulus is always:Read the answer and worked solution →Cranes lift heavy loads using a thick:Read the answer and worked solution →A bridge must withstand traffic load, wind force and its own:Read the answer and worked solution →To reduce the bending of a beam, it is more effective to increase its:Read the answer and worked solution →A very deep, thin beam may bend sideways under load. This is called:Read the answer and worked solution →The I-shaped cross-section of bridge beams cuts weight and cost without losing:Read the answer and worked solution →Elastic properties of rocks limit the maximum height of a mountain on Earth to about:Read the answer and worked solution →The shear stress at a mountain's base must stay below the critical stress at which rocks:Read the answer and worked solution →Steel is more elastic than copper, brass and aluminium, so steel is preferred in:Read the answer and worked solution →A crane rope is usually a bundle of thin wires braided together, which gives flexibility and:Read the answer and worked solution →Catch what obeys HookeRead the answer and worked solution →Pop the strainsRead the answer and worked solution →Steer into the solids laneRead the answer and worked solution →Slice the elasticity wordsRead the answer and worked solution →Stiff or softRead the answer and worked solution →Which modulusRead the answer and worked solution →Type the numberRead the answer and worked solution →Elasticity bingoRead the answer and worked solution →What is the SI unit of pressure?Read the answer and worked solution →One bar of pressure is equal to how many pascals?Read the answer and worked solution →One torr, the same as 1 mm of mercury, equals about how many pascals?Read the answer and worked solution →Standard atmospheric pressure at sea level is close to which value?Read the answer and worked solution →Pressure in a fluid is best described as which kind of quantity?Read the answer and worked solution →Take g = 10 m/s^2 and water density 1000 kg/m^3. What is the gauge pressure at 10 m depth in a lake?Read the answer and worked solution →What does gauge pressure measure?Read the answer and worked solution →A tyre pressure gauge reads which kind of pressure?Read the answer and worked solution →In a mercury barometer, the column stands at about what height at sea level?Read the answer and worked solution →

Worked practice questions

Elastomers are a class of solids that do not obey:

  1. Newton's laws
  2. Boyle's law
  3. Pascal's law
  4. Hooke's law
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Correct answer: D. Hooke's law

1. Rubber and aorta tissue stretch to large strains. 2. Stress is not proportional to strain for them. 3. So they do not obey Hooke's law. _Source: syllabus Physics Part II, Chapter 9, Mechanical Properties of Solids._

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Metals have large Young's moduli, so they need a large force to produce a:

  1. Small change in length
  2. Large change in length
  3. Change in their colour
  4. Change in their mass
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Correct answer: A. Small change in length

1. Young's modulus is stress over strain. 2. A large modulus means lots of stress for little strain. 3. So a big force gives only a small change in length. _Source: syllabus Physics Part II, Chapter 9, Mechanical Properties of Solids._

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Wood, bone, concrete and glass have Young's moduli that are:

  1. Below zero
  2. Rather small
  3. Very large
  4. Exactly equal
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Correct answer: B. Rather small

1. Steel and iron are the stiff ones. 2. These materials stretch or compress more easily. 3. Their Young's moduli are rather small. _Source: syllabus Physics Part II, Chapter 9, Mechanical Properties of Solids._

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