MHT CET202310 May 2023Evening ShiftPhysicsThermal Properties of MatterActual
A metal rod 2 ~m long increases in length by 1.6 ~mm , when heated from 0^ C to 60^ C . The coefficient of linear expansion of metal rod is
Options
- A1.33 10⁻⁵ / ^ C
- B1.66 10⁻⁵ / ^ C
- C1.33 10⁻³ / ^ C
- D1.66 10⁻³ / ^ C
Correct answer
A. 1.33 10⁻⁵ / ^ C
Step-by-step solution
We know, Coefficient of Linear expansion = L ₂- L ₁ ~L ₁ T ... (i) Given: T =60-0=60^ C L ₁=2 ~m and L ₂=2.0016 Substituting the given values into (i), = .0016 120 =1.33 10⁻⁵ / ^ C