1 Which are the three types of lasers?
a) Gas, metal vapour, rock.
b) Pointer, diode, CD.
c) Diode, inverted, pointer.
d) Gas, solid state, diode.
Answers
Answered by
28
D. Gas, solid State, Diode.
Hope it helps you
Hope it helps you
Answered by
0
d is right answer. ..
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