Reflection and Refraction of Light24122.9(a) From Snell’s law, ()11221.00 sin30.0sin1.52sinsin19.24nnθθ°===°(b) 022632.8 nm417 nm1.52nλλ===(c) 814903.0010 m s4.7410Hz632.810mcλ−×=××f==in air and in syrup (d) 88223.0010 m s1.9810 m s1.52cn×=×v==22.10(a) When light refracts from air ()11.00n=into the Crown glass, Snell’s law gives the angle of refraction as 12sinsin25.0θ−=°2CrownglassnFor first quadrant angles, the sine of the angle increases as the angle increases. Thus, from the above equation, note that θwill increase when the index of refraction of the Crown glass decreases. From Figure 22.14, this means that
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