Recent content by Nul

so if i were doing (b) would the answer be 1333.333 lux

ok thanks man ^^

yes... i know the formula i have it in my book but i don't know HOW to use them can you just show me where the numbers should go for (a) then I would probably understand please

Homework Statement A source of light is used to illuminate a screen. 1 m from the source, the intensity of the light falling on the screen is 12 000 lux. Calculate the intensity on the screen at distances of: (a) 2 m (b) 3 m (c) 4 m Homework Equations I 1/I 2 = d^2 2/d^2 1...