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The Bulk Modulus of Elasticity with Increase in Pressure
By BYJU'S Exam Prep
Updated on: September 25th, 2023
The bulk modulus of elasticity with increase in pressure__________.
- Increases
- Decreases
- Remains constant
- None of the above
Answer: A- Increases
The bulk modulus of elasticity with an increase in pressure increases.
Solution:
Like elastic solids, fluids also have elastic properties. Fluid compressibility is quantifiably given as the reciprocal of the bulk modulus of elasticity, K.
Bulk modulus K is defined as,
K = stress/strain = Change in pressure/(change in volume/ Original volume) = -[dp/(dV/V)]
A fluid’s bulk modulus (K) is not constant but rises as pressure rises.
- K lowers as temperature rises for liquids.
- K rises with rising temperature for gases.
Hence the bulk modulus of elasticity with an increase in pressure increases.
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