The minimum intensity of light to be detected by human eye is 10^{-10} {W} \/ {m}^{2} . The number of photons of wavelength 5.6\times 10^{-7} {m} entering the eye, with pupil area 10^{-6} {m}^{2} , per second for vision will be nearly

Manipal Entrance Test 2014 Physics Paper

Question : 26 of 60

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The minimum intensity of light to be detected by human eye is 10−10W∕m2 . The number of photons of wavelength 5.6×10−7m entering the eye, with pupil area 10−6m2 , per second for vision will be nearly

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