A 0.60 mW laser emits a narrow beam of light that enters the eye

A. How much energy is absorbed by the eye in 0.20 s? Final answer in mJ

B. The eye focuses this beam to a tiny spot on the retina, perhaps 5.0 m in diameter. What is the average intensity of light at this spot? Final answer in kW/cm2

C. Damage to the retina can occur if the average intensity of light exceeds 1.0102W/cm2 By what factor has the intensity of this laser beam exceeded the safe value?