Bulk Modulus
Bulk modulus K represents resistance to:
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About This Question
- Subject
- physics
- Chapter
- properties of solids and liquids
- Topic
- bulk modulus
- Difficulty
- Medium
- Year
- 2025
Solution
Correct Answer:
Volume change
Bulk Modulus (B or K) measures a substance's resistance to uniform compression (changes in volume). It is defined as the ratio of hydraulic stress (pressure) to volumetric strain: K=−ΔV/VΔP=−VΔVΔP
- The negative sign indicates that an increase in pressure (ΔP>0) leads to a decrease in volume (ΔV<0).
- The reciprocal of Bulk Modulus is called compressibility. Solids have high bulk moduli, while gases have very low bulk moduli.
This medium difficulty physics question is from the chapter properties of solids and liquids, covering the topic of bulk modulus. It appeared in the 2025 exam.
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