Physics, 14.12.2019 00:31 robert7248
Sketch the diffraction patterns that you would observe on a screen 1 m from an aperture illuminated by a he-ne laser (wavelength = 633 nm), for the following cases: a) a single slit, with slit width = 20 microns. b) two slits, slit width = 20 microns, slit spacing = 80 microns. draw these diffraction patterns as a function of position on the screen, with the x-axis in units of meters, and label the position of the first zero due to the "slit width" term.
Answers: 3
Physics, 21.06.2019 20:40
In a vernier instrument the main scale is in 1/2 mm divisions .vernier is made by redividing 19 such divisions into 20 equal parts. calculate the least count of the instrument.
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Physics, 22.06.2019 04:00
Which configuration would produce an electric current? a) rotate a coil of copper wire between two magnets. b) connect a wire between a copper and zinc strip sitting in a beaker of water. c) connect a wire to the (+) positive end of a battery and the other end to a light bulb. d) connect a wire to the negative end of a battery and the other end to a light bulb.
Answers: 2
Physics, 22.06.2019 12:00
Under the action of a constant force an object accelerates at 7.8 m/s2. what will the acceleration be if (a) the force is halved? (b) the object's mass is halved? (c) the force and the object's mass are both halved? (d) the force is halved and the object's mass is doubled?
Answers: 3
Physics, 22.06.2019 13:00
4. if you were an astronaut on the moon, what would you experience? what would you see from your perspective?
Answers: 1
Sketch the diffraction patterns that you would observe on a screen 1 m from an aperture illuminated...
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