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Given that mass of sun is 2 xx10^(30) kg...

Given that mass of sun is `2 xx10^(30)` kg and radius of sun is `7 xx10^(8) m`. In what range do you expect the mass density of the sum to be ? Is it in the range of density of solid or liquid or gas ? Explain.

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Mass density of sun `=("Mass of sun")/("Volume of sun")`
`=M/(4/3 pi R^(3))=(2xx10^(30)xx3xx7)/(4xx22xx(7xx10^(8))^(3))kg m^(-3)`
`=1.39xx10^(3) kg m^(-3)`
Thus, mass density of sun is in the range of density of solids (and not gases). At extremely high temperature of the sun (temp. of core `~10^(7) K` and surface temp.`cong 6000 K`), the gases matter exists in ionised from i.e. plasma. The high density of plasma is due to the gravitational attraction on outer layers due to inner layers of the plasma constituting the sun.
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