Physics: Heat
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Physics: Heat
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22 Questions

1. If water in a lake were to behave like other liquids, then in extremely cold weather it would freeze
2. A temperature of 70 °C is equal to
3. A thermostat is a device for
4. In an electric kettle water becomes hot by
5. The bimetallic strip in a thermostat consists of brass and iron. When the strip is heated, it bends into an arc with brass on the convex side and iron on the concave side of the arc. This happens because
6. In a medium heat flows by the actual movement of the particles of the medium. This process of heat transmission is known as
7. A hot and a cold body are kept in vacuum separated from each other. Which of the following cause decrease in temperature of the hot body?
8. A thermostat is a device which is used for
9. Tea will cool most easily in a
10. The process of transfer of heat by matter but without actual movement of the particles themselves is called
11. In which atmospheric layer are the communication satellites located?
12. When iron and wood are exposed to sunlight, the iron rod becomes hot quickly because of
13. A temperature of 176 °F is equal to
14. A temperature of 60 °C is equal to
15. A piece of metal feels hotter than a piece of wood in summer because
16. In diesel engines, ignition takes place by
17. The zero of Kelvin scale is
18. Which of the following is in-correct regarding the first law of thermodynamics?
19. By what process is heat transmitted from the filament of an evacuated electric bulb to the glass?
20. Cathode rays were discovered by
21. Both a Celsius and a Fahrenheit thermometer give the same reading at a particular temperature. What is that temperature?
22. The best conductor of heat among liquids is

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