The applications of pressure are

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Studs on the soles of football

The area of the edge of a knife

Both 1 and 2

None

answer is C.

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Detailed Solution

Pressure is the force acting on a unit area of any surface. When the surface area falls, the pressure rises simultaneously. When the surface area rises, pressure drops. Hence, pressure is inversely proportional to the area of the cross-section. Pressure is given by the formula,

Pressure = \frac{Thrust (force)}{area}

These are the following applications of the pressure where the pressure created under the studs on the soles of the football is very high for extra grip, and the edge of a knife’s blade is very small. This creates a pressure high pressure on the blade. These are the applications where the surface area is kept less to increase the pressure.

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