Is it true that the tip of a sewing needle is sharp to obtain increased pressure?

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True

False

answer is A.

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Detailed Solution

The above statement is true.
We know that,

P = \frac{F}{A}

, where

P

is the pressure,

A

is the surface area and

F

is the force exerted on it.
We can see that pressure is inversely proportional to area. As the area of the tip of the sewing needle is much less, it exerts a large pressure on the cloth being stitched. Due to this large pressure, the cloth can be pierced easily by the needle, and the stitching of clothes becomes easier.

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