NEET UG PHYSICS MCQ: MECHANICAL PROPERTIES OF SOLIDS

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Application +4 | -1

A wire of Young’s modulus

1.5 \times {10^{12}}\;\mathrm{N}{\mathrm{m}^{ - 2}}

is stretched by a force so as to produce a strain of

2 \times {10^4}.

The energy stored per unit volume is

View answer and explanation

Correct option: D

3\mathrm{\;} \times {10^4}\mathrm{\;J}{\mathrm{m}^{ - 3}}

Option D (

3\mathrm{\;} \times {10^4}\mathrm{\;J}{\mathrm{m}^{ - 3}}

) is correct because the energy stored per unit volume is calculated using the formula

\frac{1}{2} \times Y \times (\text{{strain}})^2

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