Question
Red light is used for signals because it has
–Solution
Red is the international colour of stop signs and stop lights on highways and intersections because it is scattered the least by air molecules. The effect of scattering is inversely related to the fourth power of the wavelength of a colour. Red has the highest wavelength of all the colours and is able to travel the longest distance through fog, rain, and the alike.
If 26th January, 2020 was a Sunday, then what day of the week was it on 16th March of that year?
The distance between the earth and the sun is greater during
What were the peasant associations set up in Kerala in the 1930s called?
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- It is a high-...
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