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Question

A sharp-edged knife cuts more easily than a spoon even on the application of a greater force. What is the reason for this?


A

For the same force, the pressure developed in the knife is much larger due to its sharp edge than the spoon.

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B

For the same force, the pressure developed in the knife is much smaller due to its sharp edge than the spoon.

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C

Due to gravity.

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D

Can't be said.

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Solution

The correct option is A

For the same force, the pressure developed in the knife is much larger due to its sharp edge than the spoon.


The edge of a knife is sharper than the spoon due to which the effective area on which force applied by the knife decreases. Therefore, the pressure developed is much larger in the case of the knife than a spoon. Hence, it cuts easily.


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