IB Physics Missing Orders in an Interference Pattern

This tutorial sheet examines the missing orders in the double slit interference pattern.

1. In a double slit interference pattern with coherent monochromatic light with d = 1.5b, are all interference maxima present? Explain.
2. In a double slit interference pattern with coherent monochromatic light with d = 3b, are all interference maxima present? Explain.
3. State the condition for the missing orders in a double slit interference pattern.
4. A double slit interference pattern contains missing orders of maximum interference. Where has the energy gone? Explain.