VITEEE 2014 Paper

Section: Physics
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Question : 40 of 120
 
Marks: +1, -0
An eye can detect 5 x 104 photons per square meter per sec of green light (λα = 5000 Å) while the ear can detect 1013 W/m2. The factor by which the eye is more sensitive as a power detector then ear is close to
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