Question

Which type of microscopy uses a special condenser to direct light onto the specimen from oblique angles only?

• A. Darkfield
• B. Interference contrast
• C. Phase-contrast
• D. Polarizing

Hint:

Darkfield microscopy enhances contrast in specimens that are otherwise difficult to visualize, such as living cells or thin structures like spirochetes.

Answer 1

The Correct Option is A

Darkfield microscopy utilizes a specialized condenser to illuminate specimens from oblique angles. This setup scatters light upon impact with the specimen, causing bright features to emerge against a dark field. It proves highly effective for viewing transparent or unstained samples, such as live microorganisms.