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In the given diagrams, compasses are used to plot the magnetic field around a bar magnet with poles marked N (North) and S (South). Which of the following diagrams correctly shows the expected field pattern?
Magnetic field line is directed from North Pole to South Pole outside the magnet. So option is correct.
The figure shows a ring magnet, X, floating above another ring magnet, Y. This is because
Like poles of magnets repel each other.
Reeta puts two different objects in each of the following containers.
Container (i): Copper coin and iron nail
Container (ii): Steel nail and aluminium earring
Container (iii): Marble and gold can
Container (iv): Nickel coin and steel nail
She can use a magnet to separate the objects in containers
In containers (i) and (ii), iron nail and steel nail are magnetic while copper coin and aluminium earring are non-magnetic. In container (iii), both marble and gold coin are non-magnetic and in container (iv), both nickel coin and steel nail are magnetic. So, Reeta can use a magnet to separate the objects only in containers (i) and (ii).
Lisa did an experiment to find out which part of the magnet attracts the most pins. Which of the following readings is correct regarding the number of pins attracted by the different parts of the magnet?
P and S are the poles of the magnet and the magnetic force is strongest at these ends. So, they will attract the maximum number of pins.
Study the arrangement of three bar magnets as shown in figure. Which arrangement is possible?
Arrangement C is possible as unlike poles attract each other and hence can be held as above.
Ashwini magnetized a piece of iron rod using the stroking method as shown in the diagram below,
Which part of the iron rod becomes the North-seeking pole?
P becomes the North pole and S, where the rubbing magnet is lifted becomes the South pole.
What will happen when three bar magnets are hung in the manner as shown below?
Magnet Y will get attracted towards magnet X and repelled by magnet -Z.
Magnets lose their properties significantly if
A matchbox containing an unknown object is placed on a thin sheet of glass in the experimental set-up shown in the figure.
When the bar magnet moves, it is able to drag the match box along. What is most likely to be found in the matchbox?
The match box must contain some magnetic material i.e., steel ball bearing.
In which of the following a permanent magnet is not used?
All of the given options use permanent magnets.
How many north and south poles are present in a magnet if it is broken into 6 pieces without loss of magnetism?
A magnet has two poles, North pole and South pole.
Two magnets are placed in a container as shown in the figure by some external force. What would happen if the force on magnet P is removed?
Since like poles repel each other, magnet P will repel magnet Q.
Read the given statements and select the correct option.
Statement 1: When a horseshoe magnet is brought close to a pile of iron filings, more filings will be attracted to the U shaped part of the magnet.
Statement 2: Horseshoe magnet has only one pole that is its U shaped part.
The filings will have a north seeking and a south seeking pole. The poles will attract to the poles of the horseshoe magnet causing the filings to cluster on the magnet.A horseshoe magnet is a magnet made in the shape of a horseshoe. At the ends of its legs, the magnet has two magnetic poles close together.
Which of the following is incorrect?
Magnetic force is pulling as well as pushing force.
Which of the following is the best way to keep magnets?
Soft iron placed across the poles will preserve the magnetism for a long time.
Arun suspended a bar magnet on a string as shown in the diagram below. He brought 3 bar-shaped objects P, Q and R towards the bar magnet. He placed the ends (X and Y) of each object, near the north pole of the bar magnet and recorded his observations in the table below.
Which of the object(s) is/are the magnet?
For object P: X is North pole.
Y is South pole.
For object Q: X is South pole Y is North pole.
When Asha suspended four bars of different materials from a pole and brought the North pole of a bar magnet near part P and Q of each bar one by one as shown in figure, then observations she recorded are as follows:
Which of the following sets correctly represents metal bars I, II, III and IV?
Stainless steel is non-magnetic material and iron bar is a magnetic material.
Arpita is standing in the middle of a cross road with a compass. The red portion of the compass needle is pointing towards her. She wants to go towards east then she should turn
Two bar magnets suspended by string, are separated by a piece of metal. Which of the following statements best explain the outcome shown in the diagram?
The effect of magnetic field cannot pass through any metal. Magnetic effects can pass through screens of substances such as plastic, paper, glass etc.
Observe the given figure and identify the correct statements.
(i) Poles 1, 3 and 5 are unlike poles.
(ii) Poles 2, 4 and 6 are like poles.
(iii) Pole 1 will attract pole 3 and 5.
(iv) Pole 4 will be attracted by pole 1.
Poles 1, 3 and 5 are like poles, so they will not attract each other. Similarly poles 2, 4 and 6 are like poles. Only unlike poles are attracted by each other.