Chapter 14.1, Problem 1cT

Suppose that a single change were made to the apparatus (keeping the distance between the mask and the screen fixed), resulting in the new pattern shown.
1. Are the angles to the interference maxima in the new pattern greater than, less than, or equal to those in the original pattern? Explain how you can tell from the photographs.

2. If the wavelength of light $\left(\lambda \right)$ was the only quantity changed, determine (i) whetherλ was increased or decreased, and (iii) whether it was changed by a factor that was greater than, less than, or equal to 2. Explain how you can use your results from parts A and B to justify your answer.
3. If the slit separation (d) was the only quantity changed, determine (i) whether d was increased or decreased, and (ii) whether it was changed by a factor that was greater than, less than, or equal to 2. Explain how you can use your results from parts A and B to justify your answer.