The sun is a hot plasma (ionised matter) with its linner core at a temperature excedding `10^7` K, and its outer surface at a temperature of about 6000K. At such high temps, no substance remains in a solid or liquid phase. In what range do you expect the mass density of the sun to be? In the range of densities of solids, liquieds or gases ? Check if your guess is correct from the following data : mass of sun `= 2.0xx10^(30)kg` , radius of the sun ` =7.0xx10^8m`

Explanation

Radius of the sun `=7.0xx10^(8)m`.
Volume `=4"/"3pi r^(3)`
`=4"/"3xx3.14xx(7.0xx10^(8))^(3)`
`=4"/"3xx3.14xx49xx7xx10^(24)`
Mass of the sun `=2.0xx10^(30)kg`
Density `=(M)/(V)= (2.0xx10^(30)xx3)/(4xx3.24xx49xx7xx10^(24))`
`=(3000xx10^(3))/(2xx3.14xx49xx7)`
`=1.393xx10^(3)kgm^(-3)` Mass density of the sun should be `1.4xx10^(3)kgm^(-3)`. The mass density of the sun is in the range of densities of solids and not gases. This high density of the hot plasma arises due to inward gravitational attraction on outer layers due to layers of the sun.