Posted by Alex on .
A 100 watt bulb emits light in all directions. The distance R from the bulb is equal to 1.0 meter.
Complete the table below with calculated values of intensity of the bulb.
Distance from Source Intensity (W/m2)
c) If the bulb was replaced by a 75 watt bulb, at position 2R the intensity would be?
this is really nonsense. 100 watt light bulbs do not radiate 100 watts of luminous energy. So using the inverse square law is silly, at best.