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Q.

Is it true that the unit of pressure is Nm2?


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a

True

b

False 

answer is B.

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Detailed Solution

The above statement is False.
Force per unit area of a substance is known as its pressure. Every object exerts pressure on the earth. As pressure is the ratio of force and area, the unit of force is newton (N) and the unit of area is m2, so the unit of pressure is Nm-2. Other unit of pressure is Pascal (P). The pressure exerted by the atmosphere on us is known as atmospheric pressure.
1 atmospheric pressure, 1 atm= 105 Pascal
The correct statement would be, the unit of pressure is Nm-2.
 
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