# Capa12 - 1[1 point 10 tries In a location where the speed...

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1 . [1 point, 10 tries] In a location where the speed of sound is 329 m/s, a 1955 Hz sound wave impinges on two slits 33.9 cm apart. At what angle is the first-order maximum located? Answer: 2.98e+01 deg 2 2 . [1 point, 10 tries] If the sound wave is replaced by 3.46 cm microwaves, what slit separation gives the same angle for the first-order maximum? Answer: 6.97e-02 m 2 3 . [1 point, 10 tries] If the slit separation is 1.38 µm, what frequency of light gives the same first maximum angle? Answer: 4.38e+14 Hz 2 4 . [1 point, 10 tries] The intensity on the screen at a certain point in a double-slit interference pattern is 64.9% of the maximum value. What minimum phase difference (in radians) between sources produces this result? Answer: 1.27e+00 rad 2 5 . [1 point, 10 tries] Express the phase difference as a path difference for 489 nm light. Answer: 9.87e-08 m 2 6 . [1 point, 10 tries] A beam of 578 nm light passes through two closely spaced glass plates, as shown in the figure below.

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