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प्रश्न
You are given two similar bars. One is a magnet and the other is of soft iron. How will you distinguish and identify them ?
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उत्तर
Take first bar and suspend it in a stand with the help of a thread. So that it is free to rotate in horizontal plane. Note the direction in which it sets itself. If the direction is North and South it may be magnet. Again rotate it, if this time again it sets itself in north and south direction, it is a magnet, otherwise it is iron.
Now repeat above experiment with second bar and in the same way find it if it sets always in north and south direction then it will be a magnet.
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संबंधित प्रश्न
You are given a magnet. How will you use it to find north-south direction at a place?
“Poles exist in pair”. Comment on this statement ?
Fill in the blank.
The perpendicular bisector of the line joining the two poles of a magnet is called ...................
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?
Bar magnets are often stored in pairs as shown in the figure. E and F being pieces of metal.
What is the material of darkened part?
If a magnet is carefully broken into two pieces as shown in figure (i), how does the magnetic strength of each piece compare with that of the original magnet? If another magnet is carefully broken in half along its long axis shown in figure (ii), how would the strength of each piece compare with that of the original magnet?
Explain the mechanism by which unmagnetized iron nails get attracted to a magnet when brought near it.
Differentiate between:
Primary and secondary cell.
Observe the pictures A and B given in figure carefully.
Which of the following statement is correct for the above given pictures?
