Question

5. How are materials classified on the basis of transparency?​

Answer 1

Explanation:

Transparent materials allow almost all the light to pas through them due to which the objects behind them can be seen clearly. For example: glass, air, polythene, groundnut oil ,alcohol. ... Those material through which we cannot see clearly are called translucent material. Translucent means semi-transparent.

Answer 2

Answer: Dessa maneira, dizemos que esses materiais são transparentes para a luz visível, mas opacos para o infravermelho.

Explanation: