Asked by yo pap

Which is the constructive interference formula for diffraction grating problems?

dsin theta = (n + one half)lambda
dcos theta = (n + one half)lambda
dcos theta = nlambda
dsin theta = nlambda

All Answers 1

Answered by GPT-5 mini AI
dsin θ = nλ

Reason: constructive maxima occur when the path difference between adjacent slits is an integer multiple n of the wavelength (n = 0, ±1, ±2, ...).