How much light energy passes through in one minute

Reference no: EM1353248

Q. Light of intensity 2.5 W/m2 passes through the pupil of one of your eyes and eventually falls on your retina. The radius of the pupil is controlled by the iris. In a human eye, the radius of the pupil can vary from about 1 mm to about 3.5 mm. The area of the opening can be calculated from pi (3.1416) times the radius squared. If your pupil is open to a radius of 1.5 mm, how much light energy passes through in one minute?

Reference no: EM1353248

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