If a slitted plate in a multiple slit experiment rotates, such as by 30 degrees, it would have a significant effect on the resulting interference pattern observed on the screen or detector.
In a multiple slit experiment, when the slitted plate is aligned parallel to the incoming waves (such as a laser beam), it creates multiple evenly spaced slits through which the waves pass. This configuration leads to the formation of a characteristic interference pattern on the screen.
However, when the slitted plate is rotated, the spacing and orientation of the slits change. This alteration affects the phase relationship between the waves passing through the slits, which, in turn, impacts the interference pattern.
Rotating the slitted plate by 30 degrees can have several outcomes:
Altered Interference Pattern: The rotation changes the relative path lengths traveled by the waves passing through different slits. This change in path length can lead to a modified interference pattern on the screen. The resulting pattern may exhibit shifts, changes in intensity, or even a complete transformation compared to the original pattern.
Asymmetric Pattern: Depending on the specific configuration of the slits and their angles, the rotation may introduce asymmetry into the interference pattern. The interference fringes may become unevenly spaced or skewed in a particular direction.
Loss of Interference: If the rotation significantly changes the slit configuration, it is possible that the interference pattern might disappear altogether. The resulting pattern may resemble the diffraction pattern associated with a single slit experiment.
It's important to note that the exact outcome of the rotation depends on the specific details of the experiment, such as the number and spacing of the slits, the wavelength of the incident waves, and the angle of rotation. Complex mathematical calculations, such as those based on the principles of wave interference, can help predict and understand the resulting pattern.