Question

1.2Why do we use red colour in traffic light? 1

A. Red is a primary colour

B. Red colour scattered the least in the air

C. It can be visible from distance

D. All of the above​

Answer 1

Red colour is always used for danger signals, because as red colour is having the longest wavelength, it is the least scattered. So, this signal can be seen from a very long distance.

so option B is the correct answer

Answer 2

Answer:

it can be visible from distance