23_InstSolManual_PDF_Part13

23_InstSolManual_PDF_Part13 - glass. a 5 90 2 u crit 5...

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23.47. Set Up: The largest angle of incidence for which any light refracts into the air is the critical angle for Figure 23.47 shows a ray incident at the critical angle and therefore at the edge of the ring of light. The radius of this circle is r and is the distance from the ring to the surface of the water. Figure 23.47 Solve: From the figure, is calculated from with and and Reflect: When the incident angle in the water is larger than the critical angle, no light refracts into the air. 23.48. Set Up: is the critical angle for Solve: when gives 23.49. Set Up: The ray has an angle of incidence of at the first surface of the glass, so enters the glass without being bent, as shown in Figure 23.49. If no light refracts out of the glass at the glass to air interface, then the incident angle at that interface is The figure shows that Figure 23.49 Solve: (a) For the glass-air interface and gives and (b) Now the second interface is and gives and Reflect: The critical angle increases when the air is replaced by water and rays are bent as they refract out of the
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Unformatted text preview: glass. a 5 90 2 u crit 5 28.7. u crit 5 61.3. 1 1.333 21 sin 90 2 1.52 sin u crit 5 n a sin u a 5 n b sin u b n b 5 1.333. glass S water a 5 90 2 u crit 5 48.9. u crit 5 41.1. sin u crit 5 1 1.00 21 sin 90 2 1.52 n a sin u a 5 n b sin u b u b 5 1.00. n b 5 1.00 n a 5 1.52, u a 5 u crit , a a u crit a 1 u crit 5 90. u crit . 0 n glass 5 n water sin 90 sin 48.7 5 1 1.333 21 1.00 2 sin 48.7 5 1.77. n a sin u a 5 n b sin u b u b 5 90. u a 5 48.7 n b 5 n water . n a 5 n glass , n water 5 1.333. glass S water. 48.7 p 1 11.3 m 2 2 5 401 m 2 . A 5 p r 2 5 r 5 1 10.0 m 2 tan 48.6 5 11.3 m. u crit 5 48.6. sin u crit 5 1 1.00 2 sin 90 1.333 u b 5 90. 1.00 n b 5 u a 5 u crit , n a 5 1.333, n a sin u a 5 n b sin u b u crit r 5 d tan u crit . u crit u crit r d Ray d 5 10.0 m water S air. Electromagnetic Waves 23-13...
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This note was uploaded on 03/06/2009 for the course PHYS 114 taught by Professor Shoberg during the Spring '07 term at Pittsburg State Uiversity.

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