The density of aluminium is

PHYSICS · Single correct · CBSE · Physics · Mechanical Properties of Solids · Mechanical Properties of Solids

Problem

\rho = 2.7 \times 10^{3}\,\text{kg}\,\text{m}^{-3}

. Its Young’s modulus and bulk modulus are

Y = 7.0 \times 10^{10}\,\text{Pa}

and

B = 7.5 \times 10^{10}\,\text{Pa}

, respectively. The speed of a longitudinal sound wave along an aluminium rod is closest to (a)

5.3 \times 10^{3}\,\text{m}\,\text{s}^{-1}

(b)

9.8 \times 10^{3}\,\text{m}\,\text{s}^{-1}

(c)

5.1 \times 10^{3}\,\text{m}\,\text{s}^{-1}

(d)

3.6 \times 10^{3}\,\text{m}\,\text{s}^{-1}