Diffraction from compact discA laser beam of wavelength 632 nm shines at normal incidence on the reflective side of a compact disc.
a) The tracks of tiny pits in which information is coded onto the CD are 1.60μm apart. For whatangles of reflection (measured from the normal) will the intensity of light be maximum?
b) On a DVD, the tracks are only 0.74μm apart. Repeat the calculation for that DVD.
Answers: 3
Physics, 22.06.2019 07:30, luckylady
Select all of the following that are equal to an impulse of 20 unitsa) force= 5, time= 5.5b) force= 25, time= 0.8c) force= 0.1, time= 200d) force= 10, time= 2(its b, c, and d)(also in order to find answer they have to add to get the unit)ex= 25x.8=20 or .1x200=20
Answers: 1
Physics, 22.06.2019 15:00, deonnaturner68p7hz7y
What sort of waves exhibit the doppler effect?
Answers: 1
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