Your answer is B. The human eye can only detect color and Tv waves
- Speed is the rate of change of distance with time while velocity is the rate of change of displacement with time.
- Speed is a scalar quantity while velocity is a vector quantity.
- Speed cannot be negative but velocity can be negative.
Hope you could get an idea from here.
Doubt clarification - use comment section.
Answer:
I think it has to do something with their ionizations... not entirely sure though.
Explanation:
