# NEET Practice Questions - Physics - Mechanical Properties of Solids

• Subject:

Physics

• Chapter:

Mechanical Properties of Solids

The bulk modulus of a spherical object is B. If it is subjected to uniform pressure p, the fractional decrease in radius is

(a)$\frac{P}{B}$

(b) $\frac{B}{3p}$

(c) $\frac{3p}{B}$

(d)$\frac{p}{3B}$

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Coefficient of linear expansion of brass and steel rods are  Lengths of brass and steel rods  respectively. If $\left({l}_{2}-{l}_{1}\right)$ is maintained same at all temperatures, Which one of the following relations holds good?

(a) ${\alpha }_{1}{l}_{2}^{2}={\alpha }_{2}{l}_{1}^{2}$                (b) ${\alpha }_{1}^{2}{l}_{2}={\alpha }_{2}^{2}{l}_{1}$

(c) ${\alpha }_{1}{l}_{1}={\alpha }_{2}{l}_{2}$                (c) ${\alpha }_{1}{l}_{2}={\alpha }_{2}{l}_{1}$

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