math
posted by claudia .
Snell's law of refraction can be written as sin i = n sin r, where n is the refractive index from air to water, i is the angle of incidence, and r is the angle of refraction.
In an experiment where a ray of light is directed from air into water, if the angle of incidence is 46 degrees, choose 1 option which gives the angle of refraction predicted by Snell's law, correct to 2 significant figures, given that n = 1.208.
A) 0.84 degrees
B) 0.85 degrees
C) 23 degrees
D) 36 degrees
E) 37 degrees
F) 45 degrees
G) 46 degrees
H) 47 degrees
Can anyone help please?
For Further Reading
math  Reiny, Monday, May 14, 2007 at 12:45pm
have you tried substituting your given values in the given formula?
The correct answer is obtained in one step.
math  HALEY, Monday, May 14, 2007 at 8:22pm
1 STEP
Is the answer E? 37 degree?
yes it is.
36.55º which to 2 significant figures is 37º.
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