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NEETPhysicsThermal Properties of Matter

What temperature does the wheel slip on the shaft when a large steel wheel with an outer diameter of 8.70 cm is fitted onto a shaft of the same material, which has a central hole with a diameter of 8.69 cm, and the shaft is cooled using 'dry ice'? Assume the coefficient of linear expansion of the steel to be constant over the required temperature range (αsteel = 1.20 × 10⁻⁵ K⁻¹).

Options

  1. A27°C
  2. B42°C
  3. C69°C
  4. D0°C

Correct answer

C. 69°C

Step-by-step solution

Correct Option is : (C) 69°C

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