Question

Differentiate between transparent,translucent and opaque substances.

Answer 1

transparent objects are those objects through which light can pass through
translucent objects are those objects through which light can pass through partially
opaque objects are those objects through which light cannot pass through at all 

Answer 2

Transparent objects are those objects through which rays of light can pass easily

For example - Water  and glass is the basic example of a transparent objects  

Translucent  objects are those objects through which only few rays of light can pass through it.

For example- A paper  

Opaque objects are those objects where no lays of light can pass through them.

For example- wood