Lab equipment to find the wavelength of sodium light using, Fresnels biprism, Lab equipment to determine the, wavelength of He- Ne laser using transmission grating, Lab, equipment to determine the slit width using the diffraction, pattern, Lab equipment to determine the wave length of, sodium light by Newtons rings method., lab equipmen to, determine the wave length of sodium light using a, diffraction grating, Lab equipment to find the specific, rotation of sugar solution using a Bi- quartz Polarimeter, equipment to find the refractive index of a given liquid, using hollow prism