Loss of Magnetic Property
Trending Questions
Q.
Which of the following activities will result in the loss of magnetic properties?
By immersing a magnet in water at room temperature.
Heating
Hammering
Keeping a magnet idle for a long time
Q. Permanent magnetism are demagnetized by:
- Heating
- Hammering
- Dropping from a height
- Keeping in water
Q. Which of the following ways will NOT cause a permanent magnet to lose its magnetism?
- Heating it strongly over a flame
- Dropping it on the floor repeatedly
- Hitting it with a hammer repeatedly
- Coating it with a layer of oil
Q. The magnetic properties of a magnet can be destroyed by:
- Hammering
- Heating
- Rubbing on sand
- Boiling
- Dropping down
- Cooling
- Passing current
- Lightning
Q. Choose the incorrect statement among the following.
- A bar magnet loses its magnetic property when dropped from a certain height.
- A bar magnet that has been demagnetised can't be converted to a magnet again.
- A bar magnet which is heated beyond a certain temperature loses its magnetic property.
- A bar magnet loses its magnetic property when hammered repeatedly.
Q. Which of the following methods can't be used to demagnetise a magnet?
- Dropping
- Heating
- Rubbing
- Cooling
- Breaking
- Hitting
- Wetting
- Kept Unused
Q. Which of the following may be destroyed when kept near a magnet?
- Switch
- Hard Disk
- Tubelight
- Bulb
Q. The magnetic properties of a magnet can be destroyed by:
- Cutting
- Rubbing
- Cooling
- Heating
Q. A magnet wouldn't lose its properties even after it is heated or hit hard.
- True
- False
Q. The following image shows one way of storing bar magnet. Label the parts of the image accordingly.
- Soft iron
- Bar magnet
- Wooden piece