NDA2018General AbilityGeneral ScienceActual
The coefficient of a real expansion of a material is 1.6 10⁻⁵ K ⁻¹ . Which one of the following gives the value of coefficient of volume expansion of this material?
Options
- A0.8 10⁻⁵ ~K ⁻¹
- B2.4 10⁻⁵ ~K ⁻¹
- C3.2 10⁻⁵ ~K ⁻¹
- D4.8 10⁻⁵ ~K ⁻¹
Correct answer
B. 2.4 10⁻⁵ ~K ⁻¹
Step-by-step solution
The increase in the Volume of a body due to the increase in its temperature is called thermal expansion (Volume). Coefficient of volume expansion is given by, 3 / 2 Coeff. of areal expansion aligned & =3 / 2 1.6 10⁻⁵ ~K ⁻¹ & =2.4 10⁻⁵ ~K ⁻¹ aligned