A freely suspended magnet points in the north-south direction because it aligns with Earth’s magnetic field. The Earth behaves like a giant magnet, and the magnetic poles of the Earth attract the opposite poles of the magnet. The north pole of the magnet is attracted to the Earth’s magnetic south pole, and the south pole of the magnet is attracted to the Earth’s magnetic north pole, causing the magnet to align with the Earth’s magnetic field.
Related Questions:
- Can two magnetic field lines intersect each other? Justify your answer.
- Q4. How many kilometers are there in 25 micrometers?
- 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.
- Q6. Look at the measurement of vernier calipers:
- Q7. Look at the figure of screw gauge, let a small steel ball is place between its thimble and anvil then:
- SEPARATION TECHNIQUES
- Define the following branches of physics:
- Define the terms theory and law. Also, give two examples of each.
- Define Hypothesis?
- What is the difference between classical mechanics and quantum mechanics?
- What determines the validity of a theory?
- Which part of the study is not handled by the classical study of physics?
- Discuss the importance of physics in our daily life.
- Briefly discuss the importance of physics in other disciplines of science.
- Differentiate the terms ‘science’, ‘technology’, and ‘engineering’ with suitable examples.
- Explain the terms hypothesis, theory, and law with examples.
- Define the scientific method and list its key steps.
- Explain why theories are modified over time.