Question

1) Two narrow slits are used to produce a double-slitinterferencepattern with monochromatic light (λ = 580 nm).The slits are separated by 0.60 mm, and the interference pattern isprojectedonto a screen 7.0 m away from theslits.

(a) What is the distance between twonearbybright fringes on the screen?
m

(b) What is the distance between two nearby dark fringes onthescreen? Assume the fringes are near the center of theinterferencepattern.
m

2) Sound waves with a wavelength of0.50 m areemitted coherently (i.e.,in phase with each other) from twosources. These waves are foundto interfere constructively at apoint P that is1.20 m from one of the sources. Whatis thedistance from P to the other source? Note:Thereis more than one correct answer. Give the solutionscorresponding tom = 0, 1, 2.

m	distance (m)
0
1
2