What is a characteristic of simple questions in physics?

Simple questions in physics are characterized by the ability to be answered unambiguously. This means that they have clear, definite answers that can be derived from established scientific principles and theories. A simple question often focuses on fundamental concepts that can be easily understood and addressed without the need for extensive or complicated reasoning.

In physics, asking straightforward questions allows for a focused inquiry into specific phenomena. For example, asking "What is the acceleration of an object in free fall?" leads to a clear response based on the known laws of motion and the influence of gravity. The unambiguous nature of these questions makes it easier for learners to grasp essential ideas and principles effectively.

The other options refer to characteristics that do not align with the nature of simple questions. For instance, irrelevant questions would not contribute to understanding physics concepts, while needing complicated experiments goes against the essence of simplicity. Overlooked questions may arise due to their simplicity but do not define the quality or clarity that simple questions embody in the study of physics.