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January 29, 2015

January 29, 2015

Posted by **Tina** on Wednesday, July 13, 2011 at 8:36pm.

The answer is 26 degrees but I keep getting 22 degrees.

I used snell's law: n1sinθ1=n2sinθ2

for n1 I thought it would be air: n=1.00

θ1=36 degrees

I thought n2 would be the water so n=1.33

and θ2 is what I am trying to find. When I plug everything in I get 22. So what am I doing wrong?

Am I using the wrong n values?

- physics -
**bobpursley**, Wednesday, July 13, 2011 at 9:27pmsin36=4/3 * sin Theta

sintheta= 3/4 * sin36=.4408

Theta(angle of refraction)=26deg, measured from the normal.

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