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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.

Soap bubbles are spherical in shape because

  spherical shape has the highest ratio of surface area to volume

  air trapped inside the bubble has low pressure

  air exerts equal pressure in all directions

  soap film has a low surface tension

  Half-n-half Clue
 

2.

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

  745 mm Hg

  15 mm Hg

  between 745 and 760 mm Hg

  760 mm Hg

  Half-n-half Clue
 

3.

Barometers modified to measure the height above sea level are called

  sphygmomanometers

  hydrometers

  altimeters

  manometers

  Half-n-half Clue
 

4.

2 Pa = _______ dynes cm-2

  0.2

  200000

  2e-05

  20

  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.

  100000

  100

  10000

  1000

  Half-n-half Clue
 

6.

Which is the 'odd one out'?

  bar

  Pa

  mm Hg

  N

  Half-n-half Clue
 

7.

4 bars = _______ Pascals

  0.0004

  400000

  40000

  4e-05

  Half-n-half Clue
 


 
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