Dyes which receive light at one wavelength and re-emit light of another wavelength are called:

Related MCQs

• The fluorescent dyes used in the liquid penetrant testing process are most active when energised with black light of what wavelengths? (Å stands for angstrom units)
• Liquid penetrants can be classified into the types of dyes they contain:
• Most fluorescent dyes used for magnetic particle testing fluoresce what colour?
• For adequate test results, the black light used in fluorescent penetrant examination should provide what minimum black light intensity at the test surface?
• A beam of radiation consisting of a single wavelength is known as: (choose one)
• The density difference displayed from one area of a film radiograph to another is called:
• How is the wavelength of scattered radiation compared to the primary beam?
• How is the wavelength of scattered radiation related to the primary beam?
• The shorter the wavelength of X or gamma rays:
• The shorter the wavelength of X or gamma rays: