A black body, initially at temperature T, cools to temperature (T/2) in time △t in surrounding which is near absolute zero. It will cool further to a temperature (T/4) in additional time.

The energy supply being cut-off, an electric heater element cools down to a temperature of its surroundings but it will not cool further because

A certain amount of water of mass m, at a temperature T_(2) cools.to temperature T_(1). The heat given out by the water is absorbed by n mole of an ideal gas. The gas expands at constant temperature T and changes its volume from V _(i) to V _(f) What is its initial volume ?

If the solution boils at a temperature T_1 and solvent at a temperature T_2 the elevation of boiling point is given by:

For measuring temperature near absolute zero, the thermometer used is

A black body of temperature T is inside chamber of T_0 temperature initially. Sun rays are allowed to fall from a hole in the top of chamber. If the temperature of black body (T) and chamber (T_0) remains constant, then

A black body of temperature T is inside chamber of T_0 temperature initially. Sun rays are allowed to fall from a hole in the top of chamber. If the temperature of black body (T) and chamber (T_0) remains constant, then

Why is it not possible to cool a gas to a temperature of absolute (0 K) ?

A body with an initial temperature theta_(1) is allowed to cool in a surrounding which is at a constant temperature of theta_(0) (theta lt theta_(1)) Assume that Newton's law of cooling is obeyed Let k = constant The temperature of the body after time t is best experssed by .

The mean square speed of the molecules of a gas at absolute temperature T is proportional to

The average kinetic energy of a molecule of a gas at absolute temperature T is proportional to