Q. ‘Breath Analyser’ is a device used by the police to detect and catch people driving under the influence of alcohol.Which one of the following radiation is used in ‘Breath Analyser’
Solution:
Infra red radiation can pass through dry air but not through water vapour.A breathalyzer or breathalyser (a portmanteau of breath and analyzer/analyser) is a device for estimating blood alcohol content (BAC) from a breath sample. Breathalyzer is the brand name (a genericized trademark) for the instrument that tests the alcohol level developed by inventor Robert Frank Borkenstein.It was registered as a trademark on May 13, 1954, but many people use the term to refer to any generic device for estimating blood alcohol content .
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