(a)
Interpretation:
The circumstances under which a helium-neon laser would be preferable to an argon-ion laser should be determined.
Concept introduction:
The helium-neon laser is working at a wavelength of
(b)
Interpretation:
The circumstances under which a diode laser would be preferable to an argon-ion laser or helium-neon laser should be determined.
Concept introduction:
The diode laser is a light creating device. It is uses semiconductor technology. It can convert electrical energy directly to the light. The helium-neon laser is working at a wavelength of
(c)
Interpretation:
The reasons of UV emitting sources are avoided should be determined.
Concept introduction:
UV rays are visible radiation as such as visible light, signals. Ultraviolet (UV) rays are
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