Chapter 11.5, Problem 2fT

Consider the relative intensity graph shown at right.

Suppose that both slits were made narrower (without changing the distance between the centers of the slits).

On the graph at right, indicate how the relative intensity would change. Explain.

Suppose that after gradually narrowing both slits, one of the slit, were then covered. On the axes provided, sketch the relative intensity graph for this case.

How does your graph compare o what you would expect for a point source? If it is different, how could you modify the physical situation so that the relative intensity graph better approximates that due to a point source?

In order for the relative intensity graph to be a good approximation of that due to a point source, how must the width of the slit compare to A? Explain your reasoning.