26_InstSolManual_PDF_Part11

26_InstSolManual_PDF_Part11 - Interference and Diffraction...

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26.50. Set Up: Solve: Same means 26.51. Set Up: The angular size of the object is its height divided by its distance from the eye. Solve: and Diffraction doesn’t play a significant role. 26.52. Set Up: The angular size of the object is its height divided by its distance from the eye. Solve: (a) The angular size of the object is and the object cannot be resolved. (b) and (c) This is very close to the experimental value of 1 min. (d) Diffraction is more important. 26.53. Set Up: Take the width of a typical license plate to be about 30 cm. Solve: The angular size of the object is Setting gives Reflect: A mirror of this diameter (less than one meter) is feasible. 26.54. Set Up: Constructive interference occurs when the path difference from the two sources is Destructive interference occurs when the path difference is Solve: (a) The path difference from the two speakers is a half-integer number of wavelengths and the interference is destructive. (b)
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