MHT CET202312 May 2023Evening ShiftPhysicsThermal Properties of MatterActual
The volume of a metal block increases by 0.225 % when its temperature is increased by 30^ C . Hence coefficient of linear expansion of the material of metal block is
Options
- A7.5 10⁻⁵ / ^ C .
- B6.75 10⁻⁵ / ^ C .
- C2.5 10⁻⁵ / ^ C .
- D1.5 10⁻⁵ / ^ C .
Correct answer
C. 2.5 10⁻⁵ / ^ C .
Step-by-step solution
The increase in volume is V V 100=0.225 Change in temperature is T =30^ C We know, =3 The change in volume is V = V T array ll & V ~V 100=3 T 100 & 0.225=3 30 100 & = 0.225 3 30 100 & =2.5 10⁻⁵ / ^ C array