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School Physics Quiz : Pressure


Answer the following questions based on the change of state and latent pressure.

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Multiple choice

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1.

If a pressure of  8 Pa acts on 5 m2 of area, then the force acting on the surface is

  40dynes

  40 N

  1.60 N

  1.60dynes

  Half-n-half Clue
 

2.

What instrument is used for measuring atmospheric pressure?

  Barometer

  Hygrometer

  Sphygmomanometer

  Hydrometer

  Half-n-half Clue
 

3.

pressure - barometer
To measure the atmospheric pressure, the space (labeled A) above the mercury level in a barometer tube is

  filled with nitrogen

  filled with water

  essentially vacuum

  filled with air

  Half-n-half Clue
 

4.

pressure - manometer
One arm of a glass U-tube is open to the atmosphere, whereas the other vertical arm is connected to a gas supply. The difference in levels of mercury (density = 13.6 g cm-3) between the vertical arms of the U-tube manometer is h = 2 cm. If the atmospheric pressure is 760 mm Hg and the gravitational acceleration is 9.8 m s-2, then the pressure of the gas is about

  2.666 × 104dynes cm-2

  1.016 × 107dynes cm-2

  1.061 × 104dynes cm-2

  1.040 × 106dynes cm-2

  Half-n-half Clue
 

5.

_______ states that the product of the pressure and volume of a fixed mass of gas is constant provided the temperature is unchanged.

  Boyle's Law

  Dalton's Law

  Charles' Law

  Avogadro's Law

  Half-n-half Clue
 

6.

Barometers modified to measure the height above sea level are called

  sphygmomanometers

  hydrometers

  manometers

  altimeters

  Half-n-half Clue
 

7.

The pressure at a point in a liquid is proportional to the _______ of the liquid and the depth of the point.

  density

  force

  area

  gravitational acceleration

  Half-n-half Clue
 


 
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