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प्रश्न
Why do we use red colour as a danger signal on the top of a skyscraper?
टिप्पणी लिखिए
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उत्तर
Since red has the longest wavelength of all the colours that make up visible light, it is least dispersed by atmospheric air molecules and may therefore travel farther or be seen more clearly from a distance.
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क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 2: Light - Frequently Asked Questions in Board Examination [पृष्ठ १५६]
