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BITSAT2020PhysicsThermal Properties of MatterActual

A crystal has a coefficient of expansion 13 10⁻⁷ in one direction and 231 10⁻⁷ in every direction at right angles to it. Then the cubical coefficient of expansion is

Options

  1. A462 10⁻⁷
  2. B244 10⁻⁷
  3. C475 10⁻⁷
  4. D257 10⁻⁷

Correct answer

C. 475 10⁻⁷

Step-by-step solution

aligned &= ₁+ ₂+ ₃ &=13 10⁻⁷+231 10⁻⁷+231 10⁻⁷ &=475 10⁻⁷ aligned

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