11. A fan produces feeling of comfort during hot weather, because
12. A thermometer is used to measure
13. Water is used in hot water bags because it
14. A metal plate with a circular hole at the centre is heated. What will happen to the area of the hole?
15. To convert temperature from Celsius to Kelvin scale, you must:
16. Decrease in which of the following factors leads to an increase in the rate of evaporation?
17. Water boils at a lower temperature on the hills because
18. Which of the following is the example of ideal black body?
19. Let the average temperatures in Centigrade (C) and Fahrenheit (F) be $$\overline C $$ and $$\overline F $$. If $$\overline C $$ and $$\overline F $$ are related to $$F = \frac{9}{2}C + 32,$$ then $$\overline F $$ and $$\overline C $$ have the relation
20. On a cold day when the room temperature is 15°C, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15°C, because
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