Question

A metal rod Y = 2 × 10¹² dyne cm^-2 of coefficient of linear expansion 1.6 × 10^-5 per °C has its temperature raised by 20°C. The linear compressive stress to prevent the expansion of the rod is ______.

विकल्प

• 2.4 × 10⁸ dyne cm^-2

• 3.2 × 10⁸ dyne cm^-2

• 6.4 × 10⁸ dyne cm^-2

• 4.6 × 10⁸ dyne cm^-2

Answer 1

A metal rod Y = 2 × 10¹² dyne cm^-2 of coefficient of linear expansion 1.6 × 10^-5 per °C has its temperature raised by 20°C. The linear compressive stress to prevent the expansion of the rod is 6.4 × 10⁸ dyne cm^-2.