Benzyl chloride. Benzyl chloride, or Î±-chlorotoluene, is an organic compound with the formula C6H5CH2Cl. This colourless liquid is a reactive organochlorine compound that is a widely used chemical building block.
Two slits are illuminated with red light (Î» = 650 nm). The slits are 0.25 mm apart and the distance to the screen is 1.25 m. What fraction of the maximum intensity on the screen is the intensity measured at a distance 3.0 mm from the central.
Some distance off this center of the diffraction pattern, there will be destructive interference between waves from the two slits and the intensity will be zero. This will occur when the distance traveled by two waves differs by , so the waves are 180 degrees out of phase and the fields from the two slits cancel.