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Diffraction at a slit and heisenberg

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Qahtan Al-zaidi
Qahtan Al-zaidi

The document contains descriptions of several different physics experiments involving topics like diffraction, interference, refraction, polarization, and photovoltaic cells. The experiments involve measuring properties like slit width, refractive index, wavelength, focal length, zone plate radius, fringe spacing, optical activity, grating line spacing, and light transmission to calculate unknown values using physics equations. Precise measurements are required to be taken of distances, angles, or number of fringes observed to determine values like wavelength, thickness, or refractive index.

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Diffraction at a slit and Heisenberg’s uncertainty principle Using a slit width of 0.20 mm located at a distance of 12 m away from the screen, find the wavelength of the laser light used in producing the diffraction pattern. Refractive index of a transparent glass plate Find the refractive index of the given glass plate (t=1.17 mm) by measuring the angle of rotation for the glass plate to make 20 dark rings disappear at the center of the ring pattern. Newton’s rings Find the wavelength of the light used in nm by taking the appropriate measurements for the 3rd dark ring produced by yellow sodium light. Newton’s rings Evaluate the refractive index of the convex lens material used to obtain Newton’s rings by taking the appropriate measurements for the 6th order dark ring obtained by green laser light of wavelength equals to 530 nm. Take “+2 cm” as the focal length of the lens. Fresnel’s diffraction via the Zone plate Find the wavelength of the light used by measuring the proper image distance at the principal focal plane for the zone plate. The radius of the 7th darkened zone is equal to 0.0443351 cm and it is 2.2 m away from the object. Determination the thickness of a paper via air wedge interference Calculate the thickness of the given paper using the air wedge by taking travelling microscope measurements for the n=2 and n=4 dark fringes. The sodium yellow light of 589.3 nm wavelength is used in the experiment.
Optical activity of an optically active solution using half – shade penumbra polarimeter Starting with a sugar solution of 0.1333 g/cm3, estimate the optical activity S by taking one measurement only using the half – shade polarimeter. Diffraction grating and the dispersion and resolving powers Find the wavelength of the red spectral line in the 2 nd order spectrum for the given grating of 50 lines per mm. The photovoltaic cell Calculate both theoretically and experimentally, the ratio of the light transmitted to the light incident on the analyzer when the transmission axis of the analyzer is 45 degrees with respect that of the polarizer.

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Diffraction at a slit and heisenberg

  • 1. Diffraction at a slit and Heisenberg’s uncertainty principle Using a slit width of 0.20 mm located at a distance of 12 m away from the screen, find the wavelength of the laser light used in producing the diffraction pattern. Refractive index of a transparent glass plate Find the refractive index of the given glass plate (t=1.17 mm) by measuring the angle of rotation for the glass plate to make 20 dark rings disappear at the center of the ring pattern. Newton’s rings Find the wavelength of the light used in nm by taking the appropriate measurements for the 3rd dark ring produced by yellow sodium light. Newton’s rings Evaluate the refractive index of the convex lens material used to obtain Newton’s rings by taking the appropriate measurements for the 6th order dark ring obtained by green laser light of wavelength equals to 530 nm. Take “+2 cm” as the focal length of the lens. Fresnel’s diffraction via the Zone plate Find the wavelength of the light used by measuring the proper image distance at the principal focal plane for the zone plate. The radius of the 7th darkened zone is equal to 0.0443351 cm and it is 2.2 m away from the object. Determination the thickness of a paper via air wedge interference Calculate the thickness of the given paper using the air wedge by taking travelling microscope measurements for the n=2 and n=4 dark fringes. The sodium yellow light of 589.3 nm wavelength is used in the experiment.
  • 2. Optical activity of an optically active solution using half – shade penumbra polarimeter Starting with a sugar solution of 0.1333 g/cm3, estimate the optical activity S by taking one measurement only using the half – shade polarimeter. Diffraction grating and the dispersion and resolving powers Find the wavelength of the red spectral line in the 2 nd order spectrum for the given grating of 50 lines per mm. The photovoltaic cell Calculate both theoretically and experimentally, the ratio of the light transmitted to the light incident on the analyzer when the transmission axis of the analyzer is 45 degrees with respect that of the polarizer.