Assertion :Strain is a unitless quantity. Reason: Strain is equivalent to force

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 C Assertion is correct but Reason is incorrect
Strain is the ratio of change in dimensions of the body to the original dimensions. Because it is a ratio, it is a dimensionless quantity.

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