Which of the following is generally considered as opaque surface towards radiations?
A)Gases
B)Solids
C)Liquids
D)Both (B) and (C)

Question

Quizplus · Accepted Answer

Solids and liquids are generally considered opaque to radiation because they have closely packed molecules that absorb or reflect most of the radiation, preventing it from passing through. Gases, on the other hand, are more transparent to radiation due to their widely spaced molecules.

Which of the Following Is Generally Considered as Opaque Surface