The total power output of the sun is 3.84x10^26w. What is the intensity of sunlight at a distance of 1.49x10^11m?

1 Answer
Junaid Mirza
May 10, 2018

#"1377 W/m"^2#

Explanation:

Intensity of light due to spherical source at a distance #"r"# is given by

#"I" = "P"/("4 π r"^2)# (where #"P"# is power)

#"I" = (3.84 × 10^26\ "W")/(4 × 3.14 × (1.49 × 10^11\ "m")^2) = "1377 W/m"^2#

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