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Which of the following is/are unit of the pressure?
1. bar
2. torr
3. atm
4. All the options are units of the pressure

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Correct Answer - Option 4 : All the options are units of the pressure

CONCEPT:

  • Pressure: When the force applied is perpendicular to the surface of objects per unit area, we get pressure.

The pressure is calculated by:

P = F/A (Force per unit area)

where F is the force and A is the area.

  • The unit of pressure is Pascal (Pa). 
  • The pressure is also measured in atm, bar, torr, etc.

EXPLANATION:

  • The SI unit of pressure is Pascals.
  • The other units of the pressure are atm, bar, torr, etc.

1 atm = 1.013 × 105 Pascals

1 bar = 105 Pascals

1 torr = 133 Pascals

  • So all the units in the option are the units of pressure.
  • Hence the correct answer is option 4.

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