The red colour is used in danger signal because it is more attractive and common.

True

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False

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Solution

The correct option is B
False

Red colour scatters the least as it has the greatest wavelength. So red light is able to travel the longest distance through the fog, rain, and air particles. That is why the red colour is used in danger signals; not because it is more attractive and common. So, the given statement is false.

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