In the potential temperature equation, \(\rm \theta=T\left(\frac{p_0}{p}\right)^k\) k is:
1
Ratio of gas constant to specific heat at constant pressure for ideal diatomic gas
2
Ratio of gas constant to latent heat at constant pressure of ideal diatomic gas
3
Ratio of gas constant to Boltzmann constant
4
Ratio of gas constant to height at which is measured