Question

Explain why?
(i) ‘Danger’ signal are red in colour.
(ii) Convex mirrors are commonly used as rear – view mirrors.

Answer 1

Very good question.

I)Danger signal are red in colour because :
---> Red colour has maximum wavelength.
----> It is not scattered in atmosphere.

II)Convex mirrors are commonly used as rear – view mirrors because :
---> Convex mirror has a greater field view.
---> It always produces virtual, erect and diminished images.