Please explain too so that I can correct my mistakes! Propagation and refraction
ID: 1400272 • Letter: P
Question
Please explain too so that I can correct my mistakes!
Propagation and refraction of periodic waves Waves HW-122 2. Determine whether each of the ray diagrams below has a flaw If a diagram has a flaw, clearly describe how the physical situation is not consistent with observations that you made in tutorial (e.g., a crest is transmitted as a crest). If a diagram has no flaw Use a straightedge to draw incident and transmitted wavefronts that are consistent with the rays and boundary shown If possible, determine in which medium the waves travel more quickly. If it is not possible to make this comparison, explain why not. Tutorials in Introductory Physics McDermott, Shaffer, & P.E.G., U. Wash ©Prentice Hall, Inc. First Edition, 200:2Explanation / Answer
I number these as
1 2
3 4
5 6
1. Has no flaw.The upper medium is faster as the ray is farther from the normal there.
2. Has flaw. It cannot be that the refracted ray is on the normal, except when the incident is normal.
3. Has flaw. It must somehow "continue" its path, not completely change direction like reflection.
4. Has no flaw. However, we cannot determine which is faster.
5. Has no flaw.The lower medium is faster as the ray is farther from the normal there.
6. Has flaw. If the incident is normal, the refracted ray is also normal.