First slide

Thermometry

Question

The steam point and the ice point of a mercury thermometer are marked as 80⁰ and 20⁰. What will be the temperature in centigrade mercury scale when this thermometer reads 32⁰

Easy

A

20⁰C
B

30⁰C
C

10⁰C
D

0⁰C

Solution

$\begin{array}{l} \frac{32 - 20}{60} = \frac{C}{100} \\ C = \frac{12 \times 5}{3} = 20^{\circ} C \end{array}$

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