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Q.

How can we increase the pressure by exerting the same force?


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a

Increasing the area

b

Decreasing the area

c

Keeping the area constant

d

None of the above 

answer is B.

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Detailed Solution

We can increase the pressure by decreasing the area and keeping the force constant.
The pressure formula shows that the pressure is directly proportional to the force exerted and inversely proportional to the body's surface area. Since the pressure is inversely proportional to the surface area, the pressure increases with a decrease in the surface area. Hence, the pressure can be increased by decreasing the surface area by exerting the same force.
We know that Pressure, P  = ForceArea
i.e., P α 1A
 
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