Answer:
True
Explanation:
We are given the following statement which we are to determine if it is true or false:
'When work is done on an object, the object gains energy'.
The above given statement is true. The reason being that the object gains kinetic energy as a work is done on it or in other words, force is applied on it which moves it.
The work done on the object is equal to the kinetic energy gained by the object, given that there are no frictional forces.