MCAT CONTENT REVIEW - MATH AND PHYSICS (PRINCETON)

Q1

An object appears blurry in the water but clear in the air. The answer to this is the different index of refraction of air and water. However, how isn't the concept of dispersion the reason why the object is blurry in the water (the light of the object splits into different frequencies of colors so they would bend towards the normal differently, so wouldn't that mean that they could converge at different points even before the retina, which would decrease the amount of light reaching the eye, but that again would just dim the light?) Or why isn't the fact that water absorbs light the reason why the object is blurry (is it because it would only dim the light of the object, but all light would go to the eyes?)

I thought the difference in index of refraction would do the same thing bending differently to the normal and the amount of light reaching the eye would decrease?

A person notices that an object at a given distance 1s clearly In Tocus wnen viewed In air, but when the same object at the same distance is viewed in clear water, it appears blurry. Which of the following best explains this phenomenon? a.) The water absorbs much of the light energy coming from the object. b.) The index of refraction of water is different than that of air. c.) Dispersion in the water causes only a few of the light rays from the object to reach the eyes. d.) The water acts as a polarizing filter