_________ is the most common and convenient source of light.(a) Neon-xenon arc(b) Xenon-mercury arc(c) Tungsten lamp(d) Hydrogen discharge lampThis question was addressed to me in an international level competition.The question is from Multi-Channel Wireless Telemetry System in chapter Biomedical Telemetry of Biomedical Instrumentation

_________ is the most common and convenient source of light.(a) Neon-x

1.	_________ is the most common and convenient source of light.(a) Neon-xenon arc(b) Xenon-mercury arc(c) Tungsten lamp(d) Hydrogen discharge lampThis question was addressed to me in an international level competition.The question is from Multi-Channel Wireless Telemetry System in chapter Biomedical Telemetry of Biomedical Instrumentation
Answer» CORRECT choice is (c) Tungsten lamp To explain I WOULD say: The most common and convenient source of light is the tungsten lamp. This lamp consists of a tungsten FILAMENT ENCLOSED in a glass envelope. It is cheap, intense and reliable. A major PORTION of the energy emitted by a tungsten lamp is in the visible region and only about 15 to 20% is in the infrared region.

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