氣體動力論
物理 · 共 16 題 · 點擊選項即時核對答案
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11.
Which of the following can increase the average kinetic energy of the molecules of a fixed mass of gas ?
(1)Heating the gas at constant volume
(2)Increasing the volume of the gas at constant pressure
(3)Reducing the volume of the gas at constant temperature
12.
Which of the following statements concerning the Brownian motion of smoke particles in air is/are correct ?
(1)The Brownian motion is caused by collision between smoke particles.
(2)The air molecules are moving randomly in all directions.
(3)The mass of air molecules is almost the same as that of smoke particles.
13.
Some gas is sealed inside a container of fixed volume. If the gas is heated, which of the following statements is/are true ?
(1)The pressure of the gas increases.
(2)The kinetic energy of the gas molecules increases.
(3)The density of the gas increases.
14.
The pressure exerted by a gas in a container would increase if
(1)the average speed of the gas molecules were increased.
(2)the number of gas molecules were increased.
(3)the volume of the container were increased.
15.
When a constant mass of gas is compressed inside a vessel at constant temperature, the pressure of the gas increases. This is because
(1)the average distance between gas molecules decreases.
(2)the frequency of the gas molecules hitting the wall of the container increases.
(3)the average speed of the gas molecules increases.
16.
When observed through a microscope, smoke particles in a smoke cell are seen to be in continuous random motion. This is mainly due to