Task id10096
Seller: nerdmavr
Price: 0.15 USD
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Product description
A 60 cd lamp is used to print photographs. If the lamp is placed at a distance of 1.5 m from the photograph, then the exposure time is 2.5 s. Determine the exposure time if you use a 40 cd lamp located at a distance of 2 m from the photograph.
Additional information
Detailed solution. Format png