Answer to Question 9
Use the inverse square law: Distance goes from 0.01 m to 1.5 m which is 150 times Intensity reduces by 1502 = 22500 Intensity now is 4 x 106 W m-2 ÷ 22500 = 178 W m-2
Use the inverse square law:
Distance goes from 0.01 m to 1.5 m which is 150 times
Intensity reduces by 1502 = 22500
Intensity now is 4 x 106 W m-2 ÷ 22500 = 178 W m-2
