Value of Young's modulus for a perfectly rigid body is ...........

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8.Mechanical Properties of Solids

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The value of Young's modulus for a perfectly rigid body is ...........

A

$1$

B

Less than $1$

C

Zero

D

Infinite

Solution

(d)

For perfectly rigid body the condition is that there should not be any elognation $(\Delta L=0)$ for any value of force

So from the formulae we know $\frac{F L}{A \cdot \Delta L}=Y$

If we put $\Delta L=0$

We get $Y$ as $\infty$

Standard 11

Physics

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