Advertisements
Advertisements
प्रश्न
Suggest one way to recognize the magnetic field of the earth.
उत्तर
If we suspend a magnet such that it is free to swing, we see that it always rests in the north-south direction. The north pole of the magnet lies in the geographic north direction and the south pole of the magnet lies in the geographic south direction. So it aligns itself in N-S direction.
APPEARS IN
संबंधित प्रश्न
Fill in the blank.
A freely suspended magnet always comes to rest in the ................. direction.
You are provided with two similar bars, one is a magnet and the other is a soft iron. How will you distinguish between them without the use of any other magnet or bar?
[Hint : A magnet when suspended freely will rest only in the north-south direction, but the soft iron bar will rest in any direction]
A small iron bar is kept near the north pole of a bar magnet. How does the iron bar acquire magnetism? Draw a diagram to show the polarity on the iron bar. What will happen if the magnet is removed?
State two evidences of the existence of earth's magnetic field.
Define the terms magnetic declination and dip with reference to a freely suspended magnet.
Consider the statement given below and choose the correct option.
Assertion: The Earth’s magnetic field is due to iron present in its core.
Reason: At a high temperature a magnet loses its magnetic property or magnetism.
Though Earth is acting as a huge bar magnet it is not attracting other ferromagnetic materials. Why? Give reasons.
What is the diameter of the magnetar?
What is meant by the magnetic axis?
Write a note on Magnetar.
