Magnetic field around a magnet is represented by magnetic field lines forming closed loops. Explain.

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The magnetic field around a magnet is represented by magnetic field lines that form closed loops. This means that the magnetic field lines originate from one pole of the magnet, extend outwards, and eventually return to the opposite pole. The following points explain this concept in more detail:

Magnetic Monopoles: Unlike electric charges, magnetic charges (called magnetic monopoles) do not exist in nature. This means that magnetic field lines always form closed loops since they must start and end on opposite poles of a magnet.
North and South Poles: A magnet has two poles, north and south, and the magnetic field lines originate from the north pole and end at the south pole. The direction of the magnetic field lines is from north to south.
Magnetic Field Strength: The strength of the magnetic field is proportional to the number of magnetic field lines passing through a given area. The density of the magnetic field lines represents the strength of the magnetic field in that region.
Magnetic Field Shape: The shape of the magnetic field around a magnet depends on the size, shape, and orientation of the magnet. For example, the magnetic field lines of a bar magnet extend from the north pole to the south pole and form a loop around the magnet.
Magnetic Field Interactions: When two magnets are brought near each other, the magnetic field lines interact with each other. If the poles of the two magnets are the same, the magnetic field lines repel each other, while opposite poles attract each other.

In summary, the magnetic field around a magnet is represented by magnetic field lines forming closed loops due to the absence of magnetic monopoles, with the magnetic field strength being proportional to the number of magnetic field lines and their density. The shape and orientation of the magnetic field around a magnet depending on the size, shape, and orientation of the magnet. When two magnets are brought near each other, the magnetic field lines interact with each other based on their polarity.

Magnetic Field Lines

Magnetic Field Lines

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Magnetic field around a magnet is represented by magnetic field lines forming closed loops. Explain.

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Two thin lenses of focal length \( f_1 \) and \( f_2 \) are placed in contact with each other coaxially. Prove that the focal length \( f \) of the combination is given by \[ f = \frac{f_1 f_2}{f_1 + f_2}. \]

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Magnetic field around a magnet is represented by magnetic field lines forming closed loops. Explain.

CBSE CLASS XII Related Questions

1.Two thin lenses of focal length \( f_1 \) and \( f_2 \) are placed in contact with each other coaxially. Prove that the focal length \( f \) of the combination is given by \[ f = \frac{f_1 f_2}{f_1 + f_2}. \]

2.The figure shows three point charges kept at the vertices of triangle ABC. The net electric field, due to this system of charges, at the midpoint M of base BC will be:

3. Write any two features of nuclear forces.

4.Two small identical metallic balls having charges \( q \) and \( -2q \) are kept far at a separation \( r \). They are brought in contact and then separated at distance \( \frac{r}{2} \). Compared to the initial force \( F \), they will now:

5. If both the number of protons and the neutrons are conserved in each nuclear reaction, in what way is mass converted into energy (or vice versa) in a nuclear reaction? Explain.

6. Draw the number of scattered particles versus the scattering angle graph for scattering of alpha particles by a thin foil. Write two important conclusions that can be drawn from this plot.

Similar Physics Concepts

Comments

SUBSCRIBE TO OUR NEWS LETTER

1.
Two thin lenses of focal length \( f_1 \) and \( f_2 \) are placed in contact with each other coaxially. Prove that the focal length \( f \) of the combination is given by \[ f = \frac{f_1 f_2}{f_1 + f_2}. \]

2.
The figure shows three point charges kept at the vertices of triangle ABC. The net electric field, due to this system of charges, at the midpoint M of base BC will be:

3.
Write any two features of nuclear forces.

4.
Two small identical metallic balls having charges \( q \) and \( -2q \) are kept far at a separation \( r \). They are brought in contact and then separated at distance \( \frac{r}{2} \). Compared to the initial force \( F \), they will now:

5.
If both the number of protons and the neutrons are conserved in each nuclear reaction, in what way is mass converted into energy (or vice versa) in a nuclear reaction? Explain.

6.
Draw the number of scattered particles versus the scattering angle graph for scattering of alpha particles by a thin foil. Write two important conclusions that can be drawn from this plot.