Which statements are true? 1. A farsighted person’s cornea and lens refract light to much

2. A nearsighted person’s cornea and lens do not refract light enough

3. A person whose eyes are blue has irises that reflect blue light.

4. Even people with perfectly working eyes have a blind spot in each eye

5. A lens with cataracts absorbs or scatters light that it should refract

Two polarizers are oriented at 70∘∘ to one another. unpolarized light falls on them. what fraction of the light intensity is transmitted?

What are similarities and differences of reflection, refraction, diffraction and absorption?

Asubject in a clinical research trial experiences a serious, unanticipated adverse drug experience. how should the investigator proceed, with respect to the irb, after the discovery of the adverse event occurrence? a. do not report the adverse drug experience to the irb since it is a common adverse experience.b. report the adverse drug experience to the irb only if there are several other occurrences.c. report the adverse drug experience as part of the continuing review report.d. report the adverse drug experience in a timely manner, in keeping with the irb's policies and procedures, using the forms or the mechanism provided by the irb.