The ratio of the radii of gyration of a circular disc to that of a circular ring, each of same mass and radius, around their respective axes is

On a new scale of temperature (which is linear) and called the W scale, the freezing and boiling points of water are 39^oW and 239^oW respectively. What will be the temperature on the new scale, corresponding to a temperature of 39^oC on the Celsius scale ?

At 10^oC the value of the density of a fixed mass of an ideal gas divided by it pressure is x. At 110^oC this ratio is

If Q, E and W denote respectively the heat added, change in internal energy and the work done in a closed cyclic process, then