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| 1. |
The walls of buildings facing east or west are usually built with hollow bricks. Explnin Why. |
| Answer» <html><body><p></p>Solution :The thermal conductivity of the insulating brick is 0.15`Wm^(-1)K^(-1)` and that of <a href="https://interviewquestions.tuteehub.com/tag/concrete-928347" style="font-weight:bold;" target="_blank" title="Click to know more about CONCRETE">CONCRETE</a> is 0.8 `Wm^(-1)K^(-1)` and that of air is `0.024Wm^(-1)K^(-1)`. Since air is a bad conductor of heat, heat from the <a href="https://interviewquestions.tuteehub.com/tag/sun-1234558" style="font-weight:bold;" target="_blank" title="Click to know more about SUN">SUN</a> falling on the wall is poorly conducted into the <a href="https://interviewquestions.tuteehub.com/tag/rooms-1190909" style="font-weight:bold;" target="_blank" title="Click to know more about ROOMS">ROOMS</a>. <br/> This renders the living rooms and bed rooms cooler than ones not using the hollow <a href="https://interviewquestions.tuteehub.com/tag/bricks-904084" style="font-weight:bold;" target="_blank" title="Click to know more about BRICKS">BRICKS</a>.</body></html> | |