what is likely to happen if the glass of a thermometer expands more upon heating than the liquid inside?

Assessment: JAMB UTME - Physics - 2006 Subject: Physics

Question 1 Report

what is likely to happen if the glass of a thermometer expands more upon heating than the liquid inside?
Answer Details
When a thermometer is heated, both the glass and the liquid inside it will expand. However, if the glass expands more than the liquid, then the volume of the glass will increase more than that of the liquid. This will result in a decrease in the pressure inside the thermometer. As a result, the liquid will rise up in the stem of the thermometer to fill the partial vacuum created. Therefore, the correct option is "the liquid will rise up in the stem".

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