Optics-can't figure out what i'm doing wrong

• pyroknife
In summary, a scuba-diver using a diving mask with a convex spherical surface between the water and air will see objects appear closer than they actually are. Using the equation n1/s+n2/s'=(n2-n1)/r, a fish swimming 2.5 m in front of the mask will appear to be -84 cm in front of the mask. This means that the fish will appear to be in front of the mask and not in the faceplate.
pyroknife

Homework Statement

On a vacation, you are scuba-diving and using a diving mask that has a
face plate and that bulges outward with a radius of curvature of 0.50 m. As a
result, a convex spherical surface exists between the water and the air in the
the mask does the fish appear to be?

Homework Equations

n1/s+n2/s'=(n2-n1)/r

The Attempt at a Solution

The viewer is obviously inside the diving mask, so we make everything with respect to that.
n1=1, n2=1.33, s=-2.5 (since the object is located on the other side of the faceplate), r=.5. That however is not getting me the right answer. What am I doing wrong?

You should show your work, then perhaps someone can see where you did go wrong. Also, it is courteous to provide the answer with the question, given that you have it.

With those #s I got 1.25m (which would mean that the image appears to be in the faceplate, doesn't make sense) , the answer is -84cm (the fish appears to be in front of your mask)

1. How can I improve the resolution of my microscope?

One common mistake that affects the resolution of a microscope is improper focusing. Make sure to adjust the focus knob until the image is crisp and clear. You can also try using a higher numerical aperture objective or reducing the distance between the specimen and the objective lens.

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