- #1

JoeyBob

- 256

- 29

- Homework Statement:
- see atached

- Relevant Equations:
- 1/p+1/q=-2/R

So first I looked at where the image of the fish appeared to be when it went through the water surface.

since we can assume the water is flat, R is infinity, so n1/p=-n2/q. plugging in the values (n1=1.29, n2=1, p=3.5) I get q=-0.3686. So the image of the fish appears at 0.369 above the surface or 3.13 before the mirror.

I make this the new q and use the eqn 1/q+1/p=-2/R. calculating for q I get -0.642 or 0.642 behind the mirror.

but the answer is supposed to be 1.64?

since we can assume the water is flat, R is infinity, so n1/p=-n2/q. plugging in the values (n1=1.29, n2=1, p=3.5) I get q=-0.3686. So the image of the fish appears at 0.369 above the surface or 3.13 before the mirror.

I make this the new q and use the eqn 1/q+1/p=-2/R. calculating for q I get -0.642 or 0.642 behind the mirror.

but the answer is supposed to be 1.64?