PDF chapter test TRY NOW

Answer the following.
  
1. A Solid has a length L1 at temperature T1. The temperature is increased to T2. If αis the coefficient of linear expansion, the increase in length is given by ___________.
 
 
2. Some steel has a coefficient of linear expansion of 11×106K1. A 400\(mm\) length of steel piping is heated through 30\(K\). The pipe extends by  .