Question

___ needles are made to exert more pressure ​

Answer 1

Answer:

As we know pressure is directly proportional to area . Thus, when the area is larger the pressure exerted is less and when the area is smaller the pressure exerted is high. So needle exerts more pressure as it has less area.

Explanation:

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Answer 2

Low area or sharp needles are made to exert more pressure.

Reason:-

P = F / A

From the above formula of pressure we can notice that:-

1. Pressure is directly proportional to force.

P ∝ F

2. Pressure is indirectly proportional to area.

P ∝ 1/A

So, now we can say that if we want to exert more pressure so the needle should be sharp.