A sample of ideal gas is at equilibrium. Which of the following quantity is zero?

(a)

rms speed

(b)

average speed

(c)

average velocity

(d)

most probable speed

Two identically sized rooms A and B are connected by an open door. If the room A is air conditioned such that its temperature is 4°C lesser than room B, which room has more air in it?

(a)

Room A

(b)

Room B

(c)

Both room has same air

(d)

Cannot be determined

The average translational kinetic energy of gas molecules depends on

(a)

number of moles and T

(b)

only on T

(c)

P and T

(d)

P only

If the internal energy of an ideal gas U and volume V are doubled then the pressure

(a)

doubles

(b)

remains same

(c)

halves

(d)

quadruples

A container has one mole of monoatomic ideal gas. Each molecule has f degrees of freedom. What is the ratio of \(\gamma =\frac { { C }_{ p } }{ { C }_{ V } } \) 

(a)

f

(b)

\(\frac{f}{2}\)

(c)

\(\frac{f}{f+2}\)

(d)

\(\frac{f+2}{f}\)