Assertion :Pins and nails are made to have pointed ends in order to have a minimum area of contact between the pointed ends and the given surface. Reason: Minimal area of contact means that the pressure applied on the surface by the pin is greater.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
$P r e s s u r e = \frac{F o r c e}{A r e a}$
The pin & nails have sharp ends to minimize the surface area so that the pressure applied should increase the force of impact on the surface or wall.

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