Logical possibility that an assertion, hypothesis or a theory can be contradicted by , an observation or the outcome of a physical experiment is

Options

A. Law
B. Hypothesis
C. Fact
D. Falsifiability

Answer

To solve the question regarding the logical possibility that an assertion, hypothesis, or theory can be contradicted by an observation or the outcome of a physical experiment, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Concepts**:
- **Assertion**: A statement or claim that can be true or false.
- **Hypothesis**: A proposed explanation or assumption that can be tested through experiments.
- **Theory**: A well-substantiated explanation of some aspect of the natural world that is based on a body of evidence.
- **Observation**: The act of noting and recording something with instruments or through direct perception.
- **Physical Experiment**: A controlled procedure carried out to discover, demonstrate, or test a hypothesis.

2. **Identifying the Key Term**:
- The question asks for the term that describes the logical possibility of contradiction between a theory and experimental outcomes.

3. **Evaluating the Options**:
- **Law**: A statement based on repeated experimental observations that describes an aspect of the world. Laws do not change with new evidence.
- **Hypothesis**: A testable prediction or assumption but does not inherently imply contradiction.
- **Fact**: A statement that can be proven true or false, such as the number of planets in the solar system.
- **Falsifiability**: The capacity for a theory or hypothesis to be proven wrong by an observation or experiment.

4. **Conclusion**:
- The term that best describes the logical possibility that an assertion, hypothesis, or theory can be contradicted by an observation or the outcome of a physical experiment is **Falsifiability**. This means that for a theory to be scientific, it must be able to be tested and potentially disproven.

### Final Answer:
The logical possibility that an assertion, hypothesis, or theory can be contradicted by an observation or the outcome of a physical experiment is known as **Falsifiability**.

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