NEET UG PHYSICS MCQ: MECHANICAL PROPERTIES OF SOLIDS

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The expression of force constant for a spring following Hooke's law is given by:

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Correct option: A

k=\frac{Y A}{l}

Option B (

k=\frac{Y A}{\Delta l}

) is correct because it represents the force constant derived from Young's modulus, area, and change in length.

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