Advertisements
Advertisements
प्रश्न
Tick the most appropriate answer.
A permanent magnet can be demagnetized by
पर्याय
hammering
heating
rough handling
all of these.
Advertisements
उत्तर
all of these.
APPEARS IN
संबंधित प्रश्न
Fill in the blank.
Temporary magnets are usually made up of .................
Select the correct answer
Making a magnetic substance a magnet by bringing it closer to another magnet without touching it, is
Select the correct answer
The artificial magnet used to detect direction in the laboratory is
What are natural and artificial-magnets?
Tick the most appropriate answer.
Temporary magnets are made of
Fill in the blank.
Permanent magnets are generally made of steel, cobalt, nickel, or an alloy called ...............
State if the following statement is true or false. Correct the statement if it is false.
Temporary magnets are made of cobalt.
Give a reason for the following.
Electromagnets are temporary magnets.
Column I shows different positions in which one pole of a magnet is placed near that of the other. Column II indicates the resulting action between them for each situation. Fill in the blanks.
| Column I | Column II |
| N - N | ______ |
| N - ______ | Attraction |
| S - N | ______ |
| ______ - S | Repulsion |
You are given an iron strip. How will you make it into a magnet?
