EASY
Earn 100

What is meant by retentivity and coercivity?

Important Questions on Magnetism

EASY
Which of the following materials is made of a non-magnetic substance? 
MEDIUM

Look at the magnetic pendulum. The pendulum has a magnet and there are a few magnets on the board too. The pendulum does not move in a fixed direction. What is the reason behind it?

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MEDIUM
Find out and explain the usefulness of a compass in finding directions.
EASY
What is a magnetic compass? 
EASY
A magnet can attract all types of materials.
EASY
Bigger magnets are stronger magnets. Is it correct?
EASY
Why does a freely suspended magnet point in the north-south direction?
EASY
A magnet will pick up a:
HARD
Find out information on magnetic levitation and its applications. 
EASY
A recycling centre has a problem. Somehow the iron cans have got mixed up with the aluminium cans, and they look identical! You have been given the responsibility to segregate them. How will you do it?
EASY
Write two uses of magnets.
EASY
Magnets should not be placed near a:
EASY
Give some examples of magentic, and non-magnetic materials. 
EASY
Before the invention of a compass, sailors used stars to find direction. In what way is using compass better?
EASY
What are magnetic and non-magnetic materials? Give examples of each.
MEDIUM
Magnetite is a type of mineral that can attract iron.
EASY
Why does the door of refrigerator left slightly open, shut automatically?
MEDIUM
How will you prepare your own magnetic compass?
EASY
Which of these is a non-magnetic material?