Chapter 11.4, Problem 3aT

The photograph at right shows the diffraction pattern produced on a distant screen by green light incident narrow slit.
 
Use an “×” to math, the locations that correspond to the first minima.

Which locations correspond to higher-order minima?

Suppose that red light, instead of green light, were incident on the same slit.

Determine whether the angle to the first minimum for red light would he greater than, less than, or equal to that for green light. In the space below, draw diagrams that support your prediction, and explain your reasoning.

Would you expect the locations of the higher-Order minima to change? If so, how?

In the space below the photograph at the top of the page, show how the diffraction pattern would be different if red light, rather than green light, were incident on the narrow slit.

Obtain a color photograph that shows the diffraction patterns produced by red light and by green light on a narrow slit so that you may check your predictions.