Which of the following represents ultraviolet light of wavelengths which are potentially injurious (1 Å = 10-10m)

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)
• A radiation producing device which emits radiation of one or a few discreet wavelengths is:
• A radiation producing device which emits a broad spectrum of wavelengths is:
• A radiation producing device which emits a broad spectrum of wavelengths is:
• The type of discontinuity potentially most harmful to the useful life of a part is:
• Dyes which receive light at one wavelength and re-emit light of another wavelength are called:
• For adequate test results, the black light used in fluorescent penetrant examination should provide what minimum black light intensity at the test surface?
• An instrument display in which the horizontal base line represents elapsed time and the vertical deflection represents signal amplitudes is called:
• While performing a fluorescent water washable penetrant test, which of the following steps should be performed under black light?
• The human eye is most sensitive to which of the following types of light?