WBCS.LIVE practice question

The Hooke’s law is valid for

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. only proportional region of the stress strain curve
  2. entire stress strain curve
  3. entire elastic region of the stress strain curve
  4. elastic as well as plastic region of the stress strain curve

Correct answer and explanation

Correct answer: only proportional region of the stress strain curve

Explanation: ✅ Correct Answer: A) only proportional region of the stress strain curve 📚 Explanation: Hooke's Law states that within the elastic limit of a material, stress is directly proportional to strain. This linear relationship is strictly valid only in the initial 'proportional region' of the stress-strain curve. Once the material passes this proportional limit, the graph curves, meaning stress and strain are no longer directly proportional, even if the material remains elastic. This concept is fundamental to engineering and materials science.