5
Question
Q. Why are air conditioners are fitted close to ceiling?
Q. What is expansion? How it is related to heat?
Q. What is expansion? How it is related to heat?
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Solution
The solution is as follows:
Answer 11:
Cold air is denser than hot air. Thus, when cold air from AC is given out, it moves downward causing cooling. If, AC is fitted downwards, then cold air won't rise and cooling effect will reduce.
Answer 12:
Expansion is increase in volume of the gas of fixed amount. This happens on the effect of heat. Heat increases the kinetic energy of the molecules that makes them move faster and increases momentary pressure, as a result of which gas expands.
Answer 11:
Cold air is denser than hot air. Thus, when cold air from AC is given out, it moves downward causing cooling. If, AC is fitted downwards, then cold air won't rise and cooling effect will reduce.
Answer 12:
Expansion is increase in volume of the gas of fixed amount. This happens on the effect of heat. Heat increases the kinetic energy of the molecules that makes them move faster and increases momentary pressure, as a result of which gas expands.
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