|
Finger prints on a piece of paper may be detected by sprinkling fluorescent powder on the paper and then looking it into |
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|
a) |
Mercury light |
b) |
Sunlight |
c) |
Infrared light |
d) |
Ultraviolet light |
|
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 |