Is it possible to create a situation in which there is only destructive interference? Explain.
No, it is possible to have only destructive interference
The constructive and destructive interference patterns can be differentiated by the observed periodic maximum and minimum amplitude in an interference pattern.
Two coherent waves give an interference pattern after the superimposition of waves after the slits. However, if you introduce a dielectric piece with a thickness such that the path difference for the one coherent wave is and then both coherent light waves will be completely out of phase Then we will see only the destructive interference pattern.
In placing a sample on a microscope slide, a glass cover is placed over a water drop on the glass slide. Light incident from above can reflect from the top and bottom of the glass cover and from the glass slide below the water drop. At which surfaces will there be a phase change in the reflected light?
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