Question: The solar constant is the power received from the sun per unit area perpendicular to the sun's rays at the mean distance of the earth

The solar constant is the power received from the sun per unit area perpendicular to the sun's rays at the mean distance of the earth from the sun. Its value at the upper atmosphere of the earth is about 1.35 kW/m². Calculate the effective temperature of the sun if it radiates like a blackbody. (The radius of the sun is 6.96 x 10⁸ m.)

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