A thin copper wire of length increases by 1% when heated from 0oC to 100oC. If a thin copper plate of area 2l x l is heated from 0oC to 100oC, the percentage increase in its area will be :
A cylinder contains 10 kg of gas at a pressure of 107 N/m2 . The quantity taken out of the cylinder if the final pressure is . (temperature of gas is constant) is
