Practice SUMMARY - 8.7 | 8. MECHANICAL PROPERTIES OF SOLIDS | CBSE 11 Physics Part 2
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Practice Questions

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Question 1

Easy

Define stress.

πŸ’‘ Hint: Think about what happens when you apply a force.

Question 2

Easy

What is Hooke's Law?

πŸ’‘ Hint: Remember the relationship between force and deformation.

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Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What is stress defined as?

  • Force per unit volume
  • Restoring force per unit area
  • Change in dimension over original dimension

πŸ’‘ Hint: Think about how pressure is calculated.

Question 2

True or False: Hooke's Law applies only to materials under large deformations.

  • True
  • False

πŸ’‘ Hint: Consider the limits of linear behavior.

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Challenge Problems

Push your limits with challenges.

Question 1

A steel beam experiences a tensile stress of 250 MPa. If the Young's modulus of steel is 200 GPa, calculate the amount of elongation per meter of the beam.

πŸ’‘ Hint: Revisit the stress-strain relationship.

Question 2

Consider a cylindrical rod of diameter 10 mm and length 1 m subjected to a compressive force that develops a stress of 150 MPa. Determine the compressive strain experienced by the rod, given that the Young's modulus for the material is 120 GPa.

πŸ’‘ Hint: Understand the relationship between stress, strain, and their importance in material property evaluations.

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