Fluorescent penetrant indications are more visible than colour contras – McqOptions

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1.	Fluorescent penetrant indications are more visible than colour contrast penetrant indications because:
A.	They reflect more light
B.	They emit rather than reflect light
C.	They contain a higher concentration of dye particles
D.	Yellow and green contrast more than red and white
Answer» C. They contain a higher concentration of dye particles

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