An Object is an element that is present in the application . All the elements of the applications are considered as objects. Each object belongs to particular class like list box, edit box, button. image, link etc.
Object Repository is a collection of object and properties with which QTP will be able to recognize the objects and act on it. When a user records a test, the objects and its properties are captured by default. Without understanding objects and its properties, QTP will NOT be able to play back the scripts.
“Object repository acts as a container to store test objects. Test object is the object created by QTP in the test script to represent the object present in the application.”