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Radius of the Protosun

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At one stage during its birth, the protosun had a luminosity of 1000L and a surface temperature of about 1000K. What was its radius at this time? Please give the answer in three different ways:

As a multiple of the sun's present day radius,
In kilometers, and
In astronomical units.

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Solution Summary

Radius of the Protosun is assessed.

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We have the formula for Luminosity as,

L = 4 pi R^2 sigma T^4

where, R is the radius,
sigam = 5.67 × 10^−8 W·m^-2·K^-4 is the Stefan-Boltzmann constant
and T is the ...

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