Department of Pre-University Education, KarnatakaPUC Karnataka Science Class 11
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In Regnault'S Apparatus for Measuring Specific Heat Capacity of a Solid, There is an Inlet and an Outlet in the Steam Chamber. the Inlet is Near the Top and the Outlet is Near the Bottom. - Physics

Short Note

In Regnault's apparatus for measuring specific heat capacity of a solid, there is an inlet and an outlet in the steam chamber. The inlet is near the top and the outlet is near the bottom. Why is it better than the opposite choice where the inlet is near the bottom and the outlet is near the top?

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Solution

The inlet is near the top and the outlet is near the bottom because there is a loss of heat from the steam as it passes through the chamber. As the steam loses heat, a part of it condenses back to water and the cold steam gets denser and moves down towards the bottom.

But when done the other way round, the used steam does not pass through the chamber correctly and gets mixed up. This can result in discrepancy in the desired results.

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APPEARS IN

HC Verma Class 11, Class 12 Concepts of Physics Vol. 2
Chapter 3 Calorimetry
Short Answers | Q 5 | Page 46
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