M$4$HW$6$

$1$

Multiple Choice

$2$ points

Light from a helium$-$neon laser is shined on a slit of width $0\mathrm{.}02$ mm $.$ Describe qualitatively the pattem of light seen on a screen $1\mathrm{.}0$ meter away. Assume that the slit is vertical.

The pattern on the wall looks like a fuzzy slit, but turned on its side $($so it is much broader than it is tall$).$

The pattern on the wall has the same shape as the slit, but fuzzier as well as bigger.

The pattern looks exactly like the original slit, just bigger.

The pattern on the wall has a broad central spot, with a series of dimmer spots on either side.