(Solved): (b) In an interference experiment, red light (651 nm) passes through a double slit. On a screen 2. ...

(b) In an interference experiment, red light (651 nm) passes through a double slit. On a screen 2.00 m away, the distance between the 1st and 11th dark bands is 13.2 cm. (i) What is the spacing between adjacent dark bands? (A-1) (ii) What is the separation of the slits? (C-2)