The technique in the image uses which optical components?

• A. Polarizer
• B. Analyzer
• C. Polarizer and analyzer
• D. None of the above

Answer: (C)

Polarized light microscopy depends on creating and analyzing polarized light to reveal birefringent features in a specimen. The polarizer sets up plane-polarized light before it reaches the sample. If the material has birefringence, it alters the polarization state of the transmitted light. The analyzer, placed after the sample, only passes light with certain polarization orientations, so the interaction produces the distinctive brightness changes and interference colors you observe. Without the polarizer, there’s no polarized light to interact with the sample; without the analyzer, the altered polarization wouldn’t be selectively transmitted to produce contrast. This is why both components are used—the technique relies on the combined action of the polarizer and analyzer to visualize birefringence.