If The Length Of A Cylinder On Heating Increases By 2%, The Area Of Its Base Will Increase By:

250 gm of water and equal volume of alcohol of mass 200 gm are replaced successively in the same calorimeter and cool from 60^oC to 55^oC in 130 seconds and 67 seconds respectively. If the water equivalent of the calorimeter is 10 gm, then the specific heat of alcohol in cal/gm-^oC is:   

The sprinkling of water reduce the temperature of a closed room because: 

Two bars of copper having same length but unequal diameter are heated to the same temperature. The change in length will be:  

The beaker is completely filled with water at 4^oC. It will overflow:

When a metal rod is heated it expands because: 

Expansion during heating: 

Two rods of lengths L₁ and L₂ are made of materials whose coefficients of linear expansion are α₁ and α₂. If the difference between the two lengths is independent of temperature:  

When a strip made of iron (α₁) and copper (α₂ > α₁) is heated: 

An iron tyre is to be fitted onto a wooden wheel 1.0 m in diameter. The diameter of thetyre is 6 mm smaller than that of wheel. The tyre should be heated so that its temperature increases by a minimum of (coefficient of volume expansion of iron is 3.6× 10^–5/^oC):   

When a copper ball is heated, the largest percentage increase will occur in its: