List of top Physics Questions on kinetic theory asked in BITSAT

In a mixture of gases, the average number of degrees of freedom per molecule is 6. If the rms speed of the molecule is \(c\), what is the velocity of sound in the gas?
Mercury kept in the refrigerator has length L. If taken out in atmospheric pressure condition, length remains the same due to?
The de-Broglie wavelength of an electron moving with a velocity \( \frac{c}{3} \) (where \( c = 3 \times 10^8 \, {m/s} \)) is equal to the wavelength of a photon. The ratio of the kinetic energies of the electron and the photon is:
In the absence of intermolecular forces of attraction, the observed pressure $P$ will be