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- Calculating temperature using change in thermometric properties

Mark out ice point (0℃) and steam point (100℃) on graph.

Label corresponding coordinates as l_0 and l_100.

Mark an arbitrary length between the two fixed points as l_θ, tracing using a dotted line to get the temperature θ

consider gradient of graph
- from ice to steam point
- from ice to unknown temperature

3. In an unmarked mercury thermometer, the lengths of the mercury thread l_0 and l_100 are 5.0cm and 25.0cm respectively.
What is the temperature θ when l_θ is
(a) 14.0 cm and
(b) 3cm

Resistance R of a fixed length of wire varies continuously with temperature over a range of values

Compare voltage reading with calibrated values for ice and steam points.

Worksheet 8
MCQ Qn 2
Section B Qn 1-2

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