Map sapling earning As an admirer of Thomas Young, you perform a double-s t expe
ID: 1394460 • Letter: M
Question
Map sapling earning As an admirer of Thomas Young, you perform a double-s t experiment in his honor. You set your slits 1.27 mm apart and position your screen 3.35 m from the slits. While Young had to struggle to achieve a monochromatic light beam of sufficient intensity, you simply turn on a laser with a wavelength of 637 nm. How far on the screen are the first bright fringe and the second dark fringe from the central bright fringe? Express your answers in millimeters. First bright fringe: Number mam Second dark fringe Number mm A Previous 3 Up & View solution Check Answer Next DI Exit GiveExplanation / Answer
distance from central bright fringe to first bright fringe = lamda*R/d (here lamda is wavelength,R is the distance from slilts to screen and d is the slit separation)
= 637*10^-9*3.35/(1.27*10^-3)
= 1.68 mm <<<<<<<-----------Answer
distance from central bright fringe to second dark fringe = ( (2+1)/2)*lamda*R/d (here lamda is wavelength,R is the distance from slilts to screen and d is the slit separation)
= (3/2)637*10^-9*3.35/(1.27*10^-3)
= 2.52 mm <<<<<<<-----------Answer