engineering recuitment ICAR Technician 2021 Mock Test (Re-Exam) Physics Optics Refraction and Reflection
The danger signals installed at the top of the tall buildings are in red colour. These can be easily seen from a distance because among all other colours, the red light
1
is scattered the most by smoke or fog
2
is scattered the least by smoke or fog
3
is absorbed the most by smoke or fog
4
moves fastest in air