2. A photographer uses a light meter to measure the intensity of light from a flash bulb. The intensity for the flash bu

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2 A Photographer Uses A Light Meter To Measure The Intensity Of Light From A Flash Bulb The Intensity For The Flash Bu 1 (33.33 KiB) Viewed 26 times

2. A photographer uses a light meter to measure the intensity of light from a flash bulb. The intensity for the flash bulb, I, in lux, is a function of the distance from the light, d, in metres, and can be represented by 1(d)=,d>0 a) Determine the following, to two decimal places. i) the average rate of change in the intensity of light for the interval 2 < d < 6 ✓✓ ii) the approximate instantaneous rate of change in the intensity of light at exactly 4 m from the flash bulb. ✓✓ b) What does the sign of your answer to part a), subpart ii), indicate about the light intensity?