What determines the validity of a theory?

The validity of a theory is determined by:

  1. Empirical Evidence: It must be supported by experimental data.
  2. Testability & Falsifiability: Predictions should be testable and capable of being proven wrong.
  3. Consistency: It must be logically consistent and align with existing theories.
  4. Simplicity: The theory should explain phenomena with the fewest assumptions.
  5. Predictive Power: It should make accurate predictions about unobserved events.
  6. Scope: It should explain a wide range of phenomena.
  7. Reproducibility: Experiments supporting the theory should be reproducible.
  8. Adaptability: It should adjust to new evidence.
  9. Peer Review: It should undergo scrutiny and gain consensus within the scientific community.
  10. Explanatory Power: It should offer clear explanations of the phenomena.

Related Questions:

  1. Define the following branches of physics:
  2. Define the terms theory and law. Also, give two examples of each.
  3. Define Hypothesis?
  4. What is the difference between classical mechanics and quantum mechanics?
  5. Q.1 How does physics play an important role in our life?
  6. Q.10 Why do we need to consider significant digits in measurements?
  7. Q11. How random error can be reduced?
  8. Q12. Differentiate between precision and accuracy.
  9. Q.1 Define Physics. Describe its revolutionary role in technology.
  10. Q2. List with brief descriptions of different branches of physics.
  11. Q1. Write the following numbers in scientific notations.
  12. Q2. Express the followings measurements using prefixes.
  13. Q3. If a boy has age of 15 years 2 months and 10 days, convert his age in a. seconds b. milliseconds c. mega seconds
  14. Q4. How many kilometers are there in 25 micrometers?
  15. Q5. What is pitch and least count of: a. Vernier calipers if the smallest division on the main scale is 1 mm and total divisions on the vernier scale are 20. b. Screw gauge if the smallest division on its main scale is 0.5 mm and its movable scale has 50 divisions.
  16. Q6. Look at the measurement of vernier calipers:
  17. Q7. Look at the figure of screw gauge, let a small steel ball is place between its thimble and anvil then:
  20. SEPARATION TECHNIQUES