A star can be considered as a shpherical ball of hot gas of radius R.Inside the star the density of the gas is rho_r at a radius r and mass of the gas within this region is M_r.The correct differential equation for variation of mass with respect to radius ((dM_r)/(dt)) is (refer to the adjacent figure) Assuming that the gas inside the sun behaves very much like the perfect gas, the temperature at the centre of the sun is nearly (the number density of gas particles =(2rho)/(M_H) , Boltzmann constant K_B=1.4xx10^(-23) J.K^(-1) and mass of proton M_H=1.67xx10^(-27) kg)

A star can be considered as a shpherical ball of hot gas of radius R.I

1.	A star can be considered as a shpherical ball of hot gas of radius R.Inside the star the density of the gas is rho_r at a radius r and mass of the gas within this region is M_r.The correct differential equation for variation of mass with respect to radius ((dM_r)/(dt)) is (refer to the adjacent figure) Assuming that the gas inside the sun behaves very much like the perfect gas, the temperature at the centre of the sun is nearly (the number density of gas particles =(2rho)/(M_H) , Boltzmann constant K_B=1.4xx10^(-23) J.K^(-1) and mass of proton M_H=1.67xx10^(-27) kg)
Answer» ANSWER :`2.10xx10^7`

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