Q. Finger prints on a piece of paper may be detected by sprinkling fluorescent powder on the paper and then looking it into
A) Mercury light
B) Sunlight
C) Infrared light
D) Ultraviolet light
Explanation
The correct answer is Option D: Ultraviolet light.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.