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The sun's angular diameter is measured t...

The sun's angular diameter is measured to be 1920''. The distance of the sun from the earth is `1.496xx10^(11)m.` What is the diameter of the sun?

Text Solution

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Sun.s angular diameter `alpha`
1920"
`=1920xx4.85xx10^(-6)`rad
`9.31xx10^(-3)` rad
Sun.s diameter
`d = alphaD`
`=(9.31xx10^(-3))xx(1.496xx10^(11))`m
`=1.39xx10^(9)m`
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