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प्रश्न
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उत्तर
Disadvantages of setting up large dams for hydro-electricity power station::
(1) It leads to large catchment area being submerged
(2) displacement of people from their places.
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संबंधित प्रश्न
Select the correct alternative
A freely suspended magnet rests in
State four important properties of a bar magnet?
Define the following term regarding a bar magnet:
Effective length
The real test of a magnet is ______.
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?
Give scientific reason:
Soft iron is used to make electromagnets.
Write a short note on lighting conductors.
Explain the following:
Resistance of a conductor
What are the factors that determine the strength of the magnet?
The magnetic poles always exist in pairs.
