Question

Young's double slit experiment is one of the quintessential experiments in physics. The availability of low cost lasers in recent years allows us to perform the double slit experiment rather easily in class. Your professor shines a green laser (570 nm) on a double slit with a separation of 0.106 mm. The diffraction pattern shines on the classroom wall 4.0 m away. Calculate the fringe separation between the third order and central fringe. _________m

Answer 1

Pn=3 Given n=storm da 0.106 mjes L= 4 m. Use the Young's double slit experiment, O d sino = no n=3 (thind orden) and for small o, sino ~ y Central) fringe tano ~ o. & from figure tano = z 2) y = OL=.301 d. y: 37570X10-9m x 4 m 0.106 X10*3m ya 6.453 810-2 n ~ 0.065 m ons)