The Sun is a hot plasma (ionized matter) with its inner core at a temperature exceeding `10^(7)Kg`, and its outer surface at a temperature of about 6000K. At these high temperatures , 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 and liquids or gases ? Check if your guess is correct from the following data: mass of the Sun `=2.0xx10^(30)Kg`, radius of the Sun `=7.0xx10^(8)m`.

Explanation

Density of sum `=("mass of sun")/("volume of sun")=(M)/((4)/(3)piR^(3))`
`=(2xx10^(30)xx3)/(4xx3.14xx(7xx10^(8))^(3))`
`=1.4xx10^(3)kgm^(-3)=1.4gcm^(-3)`
In core part of the sun due to mass inward gravitational force act. Due to this density of plasma is very high.
Hence, the sun will be in solid or liquid form but not in gaseous form.
Outer surface of core is at very high temperature hence matter cannot be in solid or liquid form hence matter will be in form of plasma.