Question

A ray of light travels through air until it strikes the interface between the air and another medium. The incident ray makes an angle of - 48.0° with the normal, as shown in the figure below. Upon passage into the second medium, the ray is refracted, emerging from the interface at an angle 0, with respect to the normal. e Air Second medium (a) Suppose that the second medium is Ice. What is the angle of refraction, 02 (in degrees)? (Enter your answer to at least one decimal place.) 26.6 X Check that your calculator is set for angles in degrees. Double-check the index of refraction you have obtained for the second medium from your textbook or another reliable source. Be sure that you are using the sin and sin functions in the correct order. Be sure that you have not swapped the positions of the two indices of refraction (b) Suppose that the second medium is flint glass. What is the angle of refraction, 6, in this case (in degrees)? (Enter your answer to at least one decimal place.) (c) Finally, suppose that the second medium is ethyl alcohol. What is the angle of refraction, 0. In this case (in degrees)? (Enter your answer to at least one decimal place.)

Answer 1

Air 0,= 48° Second medium. el = 1.31 (9) disinco, s, sinco, = l, sino ixsinug" = (1.31) sino, O, = sin' (0.5672) 1o, = 34.55°

(62 el eflint glass) = 1.655 1x ginug" = (1.655) sino sint (0.44g = 26.680 (e) 4 (ethyl alcohol) = 1.361 1x ginug" = (1.362) sinca, sint (0.546) O, = 33.099)