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प्रश्न
Circle the odd ones and give reason
पर्याय
Iron nail
pins
rubber tube
needle
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उत्तर
Rubber tube.
Reason: Rubber tube is a non-magnetic substance, others are magnetic substances.
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संबंधित प्रश्न
Select the correct answer
If we suspend a magnet freely, it will settle in.
Distinguish between
Magnetic and non-magnetic materials.
Write main properties of a magnet.
It is advised to keep the magnets away from television, mobiles, CD and computers Explain why?
Rubber is a magnetic material.
A magnet was brought from different directions towards a toy boat that has been floating in water in a tub. Affect observed in each case is stated in Column I. Possible reasons for the observed affects are mentioned in Column II.
Match the statements given in Column I with those in Column II.
| Column I | Column II |
| Boat gets attracted towards the magnet | Boat is fitted with a magnet with north pole towards its head |
| Boat is not affected by the magnet | Boat is fitted with a magnet with south pole towards its head |
| Boat moves towards the magnet if north pole of the magnet is brought near its head | Boat has a small magnet fixed along its length |
| Boat moves away from the magnet when north pole is brought near its head | Boat is made of magnetic material |
| Boat floats without changing its direction | Boat is made up non-magnetic material |
______ made objects are attracted by magnets.
Analogy:
Magnetic substance: Attracted by magnets
Non-magnetic substance: ______.
A toy car has a bar magnet laid hidden inside its body along its length. Using another magnet how will you find out which pole of the magnet is facing the front of the car?
Suggest an activity to prepare a magnetic compass by using an iron needle and a bar magnet.
