The human eye can detect light intensities as small as, Physics

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The human eye can detect light intensities as small as

The human eye can detect light intensities as small as about 8 10-23 W/m2. The corresponding electric field amplitud is 2.5E-10N/C

(a) Suppose the eye senses this light by detecting the force on electrons inside a photoreceptor cell within the eye. What is the electric force(N) exerted on an electron by the electric field?

(b) How does this force compare to the weight of an electron? electric force/weight of electron=

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Physics: The human eye can detect light intensities as small as

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