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CBSE Class 11 (Science) Mechanical Properties of Solids and Fluids — practice questions — page 5

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 121–150 of 257.

On a metal's stress-strain graph, the straight part from O to A is where:Read the answer and worked solution →Point B on the curve, the yield point, is also called the:Read the answer and worked solution →You unload a wire past its yield point and it stays stretched. The wire has a:Read the answer and worked solution →A material's ultimate strength and fracture points are very close together. It is:Read the answer and worked solution →Rubber and aorta tissue stretch to very large strains. Such substances are called:Read the answer and worked solution →Tensile stress divided by longitudinal strain gives:Read the answer and worked solution →Steel needs 2000 N for a stretch that copper manages with 1100 N. So steel is:Read the answer and worked solution →Shear modulus G is also called the modulus of:Read the answer and worked solution →Hydraulic stress divided by volume strain is the:Read the answer and worked solution →You squeeze a solid block, a liquid drop and an air bubble with the same pressure. The largest bulk modulus belongs to the:Read the answer and worked solution →You stretch a wire and its diameter shrinks slightly. The strain across the wire is called:Read the answer and worked solution →Lateral strain divided by longitudinal strain is:Read the answer and worked solution →A crane rope must not stretch beyond its:Read the answer and worked solution →Catch what springs backRead the answer and worked solution →Pop the moduliRead the answer and worked solution →Steer into the elasticity laneRead the answer and worked solution →Slice the solids wordsRead the answer and worked solution →Elastic or plasticRead the answer and worked solution →Which stress is itRead the answer and worked solution →Which is stifferRead the answer and worked solution →Solids bingoRead the answer and worked solution →A needle pierces skin but a spoon's back pressed with the same force does not. The needle wins because of its:Read the answer and worked solution →A fluid at rest pushes on a submerged object. The force is always:Read the answer and worked solution →The SI unit of pressure honours the French scientist:Read the answer and worked solution →The excess pressure at a depth over atmospheric pressure is called:Read the answer and worked solution →Three differently shaped vessels joined at the bottom fill to the same level. This shows that pressure depends on:Read the answer and worked solution →At 1 km below the sea the pressure rises by about:Read the answer and worked solution →Torricelli's barometer uses a tube of mercury inverted into a trough. At sea level the column stands about:Read the answer and worked solution →A pressure of 1 mm of mercury is called a:Read the answer and worked solution →Pressure applied to an enclosed fluid is transmitted undiminished in all directions. This is used in:Read the answer and worked solution →

Worked practice questions

On a metal's stress-strain graph, the straight part from O to A is where:

  1. The metal breaks
  2. The metal melts
  3. Strain is zero
  4. Hooke's law holds
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Correct answer: D. Hooke's law holds

1. A straight line means stress is proportional to strain. 2. That is exactly Hooke's law. 3. So Hooke's law holds from O to A. _Source: syllabus Physics Part II, Chapter 9, Mechanical Properties of Solids._

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Point B on the curve, the yield point, is also called the:

  1. Elastic limit
  2. Fracture point
  3. Melting point
  4. Boiling point
Show answer and solution

Correct answer: A. Elastic limit

1. Up to B the body still returns to its size. 2. Beyond B it does not. 3. So B is the elastic limit. _Source: syllabus Physics Part II, Chapter 9, Mechanical Properties of Solids._

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You unload a wire past its yield point and it stays stretched. The wire has a:

  1. Lower density
  2. Permanent set
  3. Higher modulus
  4. Shorter length
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Correct answer: B. Permanent set

1. Stress is zero but strain is not. 2. The deformation is plastic. 3. The wire has a permanent set. _Source: syllabus Physics Part II, Chapter 9, Mechanical Properties of Solids._

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