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AP EAMCET · PHYSICS · Mechanical Properties of Solids

If the pressure on a body is increased from 200 kPa to 250 kPa, the volume of the body decreases by \(0.25 \%\). The compressibility of the material of the body is (in \(\mathrm{m}^2 \mathrm{~N}^{-1}\) )

  1. A \(2 \times 10^7\)
  2. B \(2 \times 10^{-7}\)
  3. C \(5 \times 10^8\)
  4. D \(5 \times 10^{-8}\)
Verified Solution

Answer & Solution

Correct Answer

(D) \(5 \times 10^{-8}\)

Step-by-step Solution

Detailed explanation

\( \Delta P = 250 \text{ kPa} - 200 \text{ kPa} = 50 \text{ kPa} = 50 \times 10^3 \text{ Pa} \) \( \frac{\Delta V}{V} = -0.25\% = -0.0025 \) \( \kappa = -\frac{\Delta V / V}{\Delta P} \) \( \kappa = -\frac{-0.0025}{50 \times 10^3 \text{ Pa}} \)…