Question

The human eye can barely detect a yellow-orange light
of wavelength 6600 Å, that delivers 1.5x 10-18 W to
the ratina. How many photons per second does the
ratina receive?
A. 50
B. 5
C.500
D.5000​

Answer 1

Answer:

it depends on the distance between that lights source and our ratina but may be it's answer is 500