A steel sphere is to be passed through a circular brass ring. At 20o C the outer diameter of sphere is 25 cm and the inner diameter of the ring is 24.9 cm if both are heated together, then temperature at which the sphere will just pass through the ring will be :(Take coefficient of linear expansion of steel= and that of brass = )
525.05o C
293o C
505o C
None of these
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
The coefficient of volume expansion of glycerine is 49 x 10-5 /oC .The fractional change in the density for a 30o C rise in temperature will be :
0.145
0.0145
0.00145
0.000145
