Physics · Elastic behaviour, stress-strain relationship, Hooke's Law
Assertion The compressive strength of a typical brittle material is significantl
Assertion The compressive strength of a typical brittle material is significantly higher than its tensile strength. Reason In compression force between the molecules increases.
- A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
- B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
- C. Assertion is correct but Reason is incorrect
- D. Both Assertion and Reason are incorrect
Step-by-step solution
The Assertion is correct: brittle materials like glass and ceramics have compressive strengths significantly higher than tensile strengths due to crack closure under compression. The Reason is also correct in that intermolecular repulsive forces increase under compression, but this is not the primary explanation for the strength difference; the key is crack behavior and stress concentration effects.
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