Start learning →

MP DTE Mechanical Properties of Solids and Fluids — practice questions — page 2

Explore 35 free Mechanical Properties of Solids and Fluids questions in MP DTE Physics. Open each question or exercise to read its content, reference answers and available explanation.

Practise Mechanical Properties of Solids and Fluids with Quill →

Mechanical Properties of Solids and Fluids questions and exercises with answers

Showing questions 31–35 of 35.

For thin spherical shell of water (radius R, thickness t), volume of water:Read the answer and worked solution →For dynamic surface tension in oil drop slowly forming at tip of pipette, drop falls when:Read the answer and worked solution →Compressibility (1/B) of water at standard conditions:Read the answer and worked solution →Match each property of matterRead the answer and worked solution →Solids topic or fluids topic?Read the answer and worked solution →

Worked practice questions

For thin spherical shell of water (radius R, thickness t), volume of water:

  1. π R²
  2. V = 0
  3. (4/3)π R³
  4. ≈ 4π R² t (for t << R, approximate via differential)
Show answer and solution

Correct answer: D. ≈ 4π R² t (for t << R, approximate via differential)

dV/dR = 4πR² (surface area). Thin shell V ≈ 4πR² × t for t << R. Useful in fluid dynamics, atomic structure (shell-by-shell electron density).

Open this question →

For dynamic surface tension in oil drop slowly forming at tip of pipette, drop falls when:

  1. Drop weight = 1
  2. Drop weight ≥ surface tension force (= γ × circumference)
  3. Random
  4. Always falls
Show answer and solution

Correct answer: B. Drop weight ≥ surface tension force (= γ × circumference)

Drop hangs by surface tension force γ × 2πr until weight exceeds it: mg = γ × 2πr → drop falls. Used in stalagmometer to measure surface tension by counting drops/volume.

Open this question →

Compressibility (1/B) of water at standard conditions:

  1. 10⁻¹⁸
  2. 1 Pa⁻¹
  3. Cannot determine
  4. About 4.6 × 10⁻¹⁰ Pa⁻¹ (B ≈ 2.2 × 10⁹ Pa)
Show answer and solution

Correct answer: D. About 4.6 × 10⁻¹⁰ Pa⁻¹ (B ≈ 2.2 × 10⁹ Pa)

Water bulk modulus B ≈ 2.2 GPa. Compressibility = 1/B ≈ 4.6 × 10⁻¹⁰ Pa⁻¹. Means 1 atm causes ~5 × 10⁻⁵ volume change. Water is nearly incompressible — hence assumption valid in hydraulics.

Open this question →

How to practise

  1. Choose a Mechanical Properties of Solids and Fluids question and try to work out your answer.
  2. Open the question to check the correct answer and read its worked solution.
  3. Continue in the app for bite-sized lessons, explanations and review with Quill. You can start without creating an account.

More Physics topics

MagnetismCurrent ElectricityWork and EnergyWork and PowerMagnetism and MatterElectromagnetismOpticsKinetic Theory of Gases