Question

a transparent substance and external look of an object​

Answer 1

Answer:Opaque and transparent substances

Glass, some plastics, cellophane, water etc. Substances which completely reflect or absorb light without transmitting any are called opaque.

Substances which transmit most of the light and only absorb or reflect a little bit are called transparent.

hope it helps u

Answer 2

Explanation:

Substances which transmit most of the light and only absorb or reflect a little bit are called transparent. Can you list some everyday objects which are transparent? Glass, some plastics, cellophane, water etc. Substances which completely reflect or absorb light without transmitting any are called opaque.