The eye can detect 5 x 104 photons (m2 s)-1 of green light (λ=5000 Ao), while ear can detect 10-13 W m-2. As a power detector, which is more sensitive and by what factor?

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Eye is more sensitive and by a factor of 5.00

Ear is more sensitive by a factor of 5.00

Both are equally sensitive

Eye is more sensitive by a factor of 10-1

answer is A.

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Detailed Solution

Energy received by the eye,E=nhcλ=5×104×6.6×10−34×3×1085000×10−10=0.2×10−13Wm−2So, eye is more sensitive by a factor 10.200=5.00

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