Download App

Magnetism — PHYSICS STD 6 — Question

ICSE BoardEnglish MediumSTD 6PHYSICSMagnetism3 Marks
Question
How can a magnet be demagnetized ?
✓

Answer

A magnet can be demagnetized in the following ways :

  • rough handling
  • hammering the magnet several times.
  • passing an alternating current around the magnet.
  • dropping the magnet on the floor several times.
  • heating the magnet to a very high temperature.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "[3 Mark Question Answer]" from Magnetism→Magnetism — all question types→PHYSICS STD 6 question papers→ICSE Board STD 6 question papers→ICSE Board question paper generator→

Similar questions

Define friction and explain how it is useful to us.
→
Answer the following in detail.
What is the use of an inclined plane? Give two examples where it is used.
→
What is a Class I lever ?
→
Across 1.
A circular disc that can rotate freely about its axle
2. The force applied on a lever
3. A type of machine made up of a cylinderical rod with spiral threads.
4. The cylinderical rod fixed to the centre of a wheel
5. The fixed point about which a lever can rotate
6. A type of simple machine made up of an iron bar
7. A type of machine formed when two inclined planes are put together
Down
→
A motorcycle weighs $1200 N.$ If the pressure exerted by one of its tyres is $120\ Pa,$ then find the area of the tyre in contact with the road.
→
Mention any two methods by which we can take care of machines.
→
Define matter. Name its three states with one example each.
→
What is a pinhole camera? Draw a neat and labelled diagram to show the formation of an image of a lighted candle by it.
→
Answer the following in detail.
Write a short note on the theory of magnetism.
→
How can you obtain a point source of light?
→