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प्रश्न
Write true or false of the following statement.
Copper cannot be magnetised.
विकल्प
True
False
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उत्तर
True
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संबंधित प्रश्न
“Poles exist in pair”. Comment on this statement ?
What is declination ? Draw a diagram to show the angle between the declination and true direction of geographic north.
Bar magnets are often stored in pairs as shown in the figure. E and F being pieces of metal.
Why are E and F placed in contact with the poles of the magnets as shown in the diagram?
Since every iron atom is a tiny magnet, why are not all iron bar magnets?
Define the following term:
Magnetic meridian
Define the following term:
Angle of declination
Give scientific reason:
Not attraction but repulsion is a sure test of magnetism.
Differentiate between:
Primary and secondary cell.
Match the following.
| Magnetite | Magnetic lines |
| A tiny pivoted magnet | Natural magnet |
| Cobalt | Compass box |
| Closed curves | Ferromagnetic material |
| Bismuth | Diamagnetic material |
Define electromagnet.
