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Sania observes that the danger signals installed at the top of tall buildings are red in colour. These can be easily seen from a distance among all other colours. Few questions came into her mind. Answer the below questions by using the above data.1. Why the red light is used for indication?(i) Most absorbed by smoke or fog(ii) Least scattered by smoke or fog(iii) Most scattered by smoke or fog2. The amount of scattering is inversely proportional to the fourth power of wavelength. True or False?(i) TRUE(ii) FALSE3. Red colour has the longest wavelength?(i) Yes(ii) NO4. If wavelength is more, the amount of scattering becomes smaller? True or False?(i) TRUE(ii) FALSE5. Which color has the shortest wavelength?(i) Red(ii) Violet(iii) Orange |
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Answer» 1. (ii) Least scattered by smoke or fog 2. (i) TRUE 3. (i) YES 4. (i) TRUE 5. (i) Violet |
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