Assertion :Surface tension has the same units as force gradient. Reason: Surface tension is the force gradient along the surface of liquid.

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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Assertion is incorrect but Reason is correct

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
The unit of surface tension is $N/m or Dyne/cm$ i.e. the same unit as force gradient because the surface tension of a liquid is measured as the force acting on unit length of an imaginary line drawn tangentially anywhere on the free surface of the liquid at rest. So both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

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