What is the change in air pressure a good indicator of a change in temperature be a change in the weather I decrease in humidity
D an increase in the chance of rain
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The destructive interference formula for diffraction grating problems is .
Destructive interference happens when the maxima of two waves are 180° out of phase a positive displacement of one wave is canceled exactly by a negative displacement of the other wave.
The formula for brighter patches resulting from constructive interference and darker patches resulting from destructive interference in a diffraction grating is:
The grating spacing is denoted by d, the angle of light is denoted by a the fringe order is denoted by n, and the wavelength is denoted by .
The destructive interference formula is now based on the fact that destructive interference occurs between the fringes.
Hence the destructive interference formula for diffraction grating problems is .
To learn more about destructive interference refer to the link;