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Sahay Sir > Question Answers > Cengage JEE Mains Physics by B.M Sharma > Chapter 13 - Thermal Expansion, Calorimetry and Transmission of Heat > An iron tyre is to be fitted onto a wooden wheel 1 m in diameter. The diameter of tyre is 6 mm smaller than that of the wheel. The tyre should be heated so that its temperature increases by a minimum of (the coefficient of volume expansion of iron is 3.6×10^−5 / degree C)

An iron tyre is to be fitted onto a wooden wheel 1 m in diameter. The diameter of tyre is 6 mm smaller than that of the wheel. The tyre should be heated so that its temperature increases by a minimum of (the coefficient of volume expansion of iron is 3.6×10^−5 / degree C)

The absolute coefficient of expansion of a liquid is 7 times that the volume coefficient of expansion of the vessel. Then the ratio of absolute and apparent expansion of the liquid is