Light falls on a pair of slits 19.0 m apart and 80.0 cmfrom the screen. The first-order bright line is 1.90 cm from thecentral bright line. What is the wavelength of the light? *What exactly is the equation I have to use for this? I'ma bit confused... Thanks for helping!! Light falls on a pair of slits 19.0 m apart and 80.0 cmfrom the screen. The first-order bright line is 1.90 cm from thecentral bright line. What is the wavelength of the light? *What exactly is the equation I have to use for this? I'ma bit confused... Thanks for helping!!
Explanation / Answer
the distance of the central bright fringe from thecentral maximum Xn = nL / d L= distacne from the screen to the slits d = distanec between the slits n = order of maxima from the above relation we can solve for wavelength for the first bright fringe n = 1 = Xd / L ,. plugging in the known values we can solve for the aboveequation .