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JEE Main 2005

Exam: JEE Main
Year: 2005
Subject: Physics
Chapter: Mechanical Properties of Solids

JEE Main 2005 · Physics · Mechanical Properties of Solids

If S is stress and Y is Young's modulus of material of a wire, the...

If

S

is stress and

Y

is Young's modulus of material of a wire, the energy stored in the wire per unit volume is

Options

A $2 S^2 Y$
B $S^2 / 2 Y$
C $2 Y / S^2$
D $S / 2 Y$

Correct answer

B. $S^2 / 2 Y$

Step-by-step solution

U=\frac{1}{2}

stress

\times

strain

=\frac{S^2}{2 Y}

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