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September 21, 2014

Homework Help: math

Posted by claudia on Tuesday, May 15, 2007 at 1:53am.

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.
36.55 which to 2 significant figures is 37.

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