Why signal is red

It has been genetically programmed that red is the colour of danger. These reasons also contribute to why red is used in traffic signals. Abhinav Parashar. Kavitha Sampath Kumar. Aakansha Rai. Uma dutta. Richa Saraf. View 7 more Answers. Ramu is a shoe manufacturer and he wants to directly exchange shoes for rice without the use of money.

Now he will have to look for a rice growing farmer who not only wants to sell rice but also wants to buy the shoes in exchange. Analyse the information given above, considering one of the following correct option. Arun 26 Jul. Priyanka Arya 08 Apr. Quest Academy - Institute of the month.

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I am a Tutor. Sorry, this phone number is not verified, Please login with your email Id. Hence red light is used for danger signal, so that the signal may be visible from the far distance even in fog, etc.

A beam of blue, green and yellow light passes through the the Earth's atmosphere. Name the colour which is scattered a the least, b the most.

The danger signal is red. Spectrum ICSE. When the light passes through atmosphere, it gets scattered by small air particles. The scattering of light is inversely proportional to the fourth power of its wavelength. As the red light has the highest wavelength among all the colours, so it is scattered the least. Due to which most of the light gets reflected back and can travel longer distances through rain, fog, dust etc. Are you worried or stressed? Click here for Expert Advice.