Question

Choose the most appropriate pair.

• A. Opaque - Concrete wall
• B. Translucent - Rock
• C. Transparent - Human Body
• D. Luminous - Fog

Answer 1

The correct option is A

Opaque - Concrete wall

The objects that allow all the light that falls on them to pass through them are called transparent objects; those objects that partially allow light to pass through them are called translucent objects while the ones that do not allow light to pass through them at all are called opaque objects. So the only appropriate pair is "Opaque - Concrete wall".