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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

Your Performance  

1.

2 Pa = _______ dynes cm-2

  0.2

  200000

  2e-05

  20

  Half-n-half Clue
 

2.

1 Pascal = 1 _______ m-2

  Erg

  Joule

  Dyne

  Newton

  Half-n-half Clue
 

3.

15 litres of a gas at a pressure of 4 bar are compressed to 5 litres without any change in the temperature. The final pressure of the gas is about

  15  bar

  12.0  bar

  1.33 bar

  1.67  bar

  Half-n-half Clue
 

4.

Soap bubbles are spherical in shape because

  soap film has a low surface tension

  air trapped inside the bubble has low pressure

  spherical shape has the highest ratio of surface area to volume

  air exerts equal pressure in all directions

  Half-n-half Clue
 

5.

If the average atmospheric pressure at sea level can support 10.34 m of vertical length of a water column, then its magnitude is about _______ Pa.
Assume density of water = 1 g cm−3 and gravitational acceleration = 9.8 m s−2.

  1000

  100000

  10000

  100

  Half-n-half Clue
 

6.

pressure - barometer
Air is trapped in the space (labeled A) above the mercury level in the tube of a barometer, which measures 745 mm Hg. If the atmospheric pressure is 760 mm Hg, then the pressure of the trapped air is

  15 mm Hg

  745 mm Hg

  760 mm Hg

  between 745 and 760 mm Hg

  Half-n-half Clue
 

7.

7 bars = _______ millibars

  70

  0.7

  0.007

  7000

  Half-n-half Clue
 


 
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