CAPE Physics Unit 1 · 2017 · Paper 1 · Question Q34

An uncalibrated mercury-in-glass thermometer when placed in a cup of water indicates the top of the mercury stem to be 14\text{ cm} above the bulb. On placing the thermometer in pure melting ice, the height is 4\text{ cm} and in steam above pure boiling water, the height is 28\text{ cm}. What is the temperature of the water in the cup?

1. (A)35.7\,^\circ\text{C}
2. (B)41.7\,^\circ\text{C}
3. (C)50.0\,^\circ\text{C}
4. (D)58.3\,^\circ\text{C}