Red is used as an emergency or danger signal as

1.	Red is used as an emergency or danger signal as
Answer» <html><body><p> Its wavelength is the longest</p><br/><br/><p><a href="https://interviewquestions.tuteehub.com/tag/danger-943693" style="font-weight:bold;" target="_blank" title="Click to know more about DANGER">DANGER</a> <a href="https://interviewquestions.tuteehub.com/tag/signals-13891" style="font-weight:bold;" target="_blank" title="Click to know more about SIGNALS">SIGNALS</a> are red in color because it is scattered the least by air molecules. Since the color red has the <a href="https://interviewquestions.tuteehub.com/tag/highest-1022683" style="font-weight:bold;" target="_blank" title="Click to know more about HIGHEST">HIGHEST</a> wavelength of all the colors we can see it scattered the least. So, red light is used as a danger signal as it is able to travel the longest distance through the fog, <a href="https://interviewquestions.tuteehub.com/tag/rain-1176646" style="font-weight:bold;" target="_blank" title="Click to know more about RAIN">RAIN</a>, <a href="https://interviewquestions.tuteehub.com/tag/etc-975753" style="font-weight:bold;" target="_blank" title="Click to know more about ETC">ETC</a>.</p></body></html>

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