11.When without change in temperature a gas is forced in a smaller volume, its pressure increases because its molecules:

12.If l is the length, A is the area of cross-section and K the thermal conductivity, then the thermal resistance of the block is given by

13.The pressure of a gas kept in an isothermal container is 200 kPa. If half the gas is removed from it, the pressure will be:

14.Two thermometers are constructed in such a way that one has a spherical bulb and other has elongated cylindrical bulb. The bulbs are made of same material and thickness. Then:

15.The temperature of a substance increases by 27 degree Centigrade. On the Kelvin scale this increase is equal to: