Which is the destructive interference formula for diffraction grating problems?

The formula for the brighter patches resulting from constructive interference and darker patches resulting from destructive interference in a diffraction grating is:
dsin(θ) = nλ
Here, d is the spacing between the grating, θ is the angle of light, n is the fringe order and λ is the wavelength. N has integer values only.
Destructive interference occurs between the fringes, so the formula for destructive interference becomes:
dsin(θ) = (n+1/2)λ, where n is again an integer.

Letter a i’d go with

Answer:

the word that best describes martin luther king jr.'s tone in the video is dignified

explanation:

martin luther king, jr. was a social activist and baptist minister who played a key role in the american civil rights movement from the mid-1950s until his assassination in 1968. the video shows his manner and attitude having or showing a composed or serious manner that is worthy of respect so dignified is the correct answer