Under favorable conditions, the human eye can detect light waves with intensities as low as 2.50 x 10-12 W/m². At this intensity, what is the average power incident on a pupil of diameter 8.10 mm? W If this light is produced by an isotropic source 11.6 m away, what is the average power emitted by the source

Under favorable conditions, the human eye can detect light waves with intensities as low as 2.50 x 10-12 W/m². At this intensity, what is the average power incident on a pupil of diameter 8.10 mm? W If this light is produced by an isotropic source 11.6 m away, what is the average power emitted by the source