Question: X 1 X 2 L Laser light lambda W (m) CD 5.2 cm 8.6 cm 10 cm 650 nm 2.40x10 -6 DVD 14.7 cm 24.5

	X₁	X₂	L	Laser light lambda	W (m)
CD	5.2 cm	8.6 cm	10 cm	650 nm	2.40x10^-6
DVD	14.7 cm	24.5 cm	10 cm	650 nm	1.518x10^-5

Questions:

1. Let w represent the unknown spacing between the CD or DVD grooves and angle 1 and angle 2 represent the angles of the first and second minima. Draw a diagram and label these quantities and the path difference between light from successive slits.

2. Compare the DVD and CD measured track separation, and discuss what that comparison implies about which one stores more data.

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