The Pupil Area of the Human Eye Is ~ 1 $\times$

question 2

Multiple Choice

The pupil area of the human eye is ~ 1 $\times$ 10^-5 m².The minimum light intensity that the eye is sensitive to is ~ 1 $\times$ 10^-10 Wm^-2.How many photons per second of wavelength 550 nm does this correspond to?

• A)~300 s^-1
• B)~30000 s^-1
• C)~3000 s^-1
• D)~3 \(\times\) 10^-2 s^-1
• E)~3 \(\times\) 10¹² s^-1

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Definitions:

Virulence

Disease-evoking power of a pathogen.

Single-celled Internal Parasites

Microorganisms that live and feed within a host's body, causing harm or disease, and consist of only one cell.

True Nucleus

A membrane-bound organelle found in eukaryotic cells containing most of the cell's genetic material.

Blood-to-blood Contact

Direct exposure or transfer of blood from one person to another, often a pathway for transmitting infections.