Question

State Newton’s formula and write its equation?

Answer 1

Newton formulated the velocity of sound in gas by assuming that the sound wave going through the gas medium in the isothermal process. That means in the time of propagation of the sound the pressure and the volume of many parts of the gas medium can be changed due to the compression and rarefaction but the temperature of the medium remains constant.

-Laplace corrected the assumption of Newton by telling that in the time of propagation of the sound the temperature can not be constant. So, the propagation of sound in the gas medium is an adiabatic process.