Chapter 24 – Magnetism and Matter
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A bar magnet is hung by a thin cotton thread in a uniform horizontal magnetic field and is in equilibrium state. the energy required to rotate it by 60o is W, Now the torque required to keep the magnet in this new position is.
19
Aug
A bar magnet is hung by a thin cotton thread in a uniform horizontal magnetic field and is in equilibrium state. the energy required to rotate it by 60o is W, Now the torque required to keep the magnet in this new position is. A bar magnet is hung by a thin cotton thread in [...]
A vibration magnetometer placed in magnetic merlian has a small bar magnet. The magnet executes oscillations with a time period of 2s in earth’s horizontal magnetic field of 24muT. When a horizontal field of 18muT is produced opposite to the earth’s field by placing a current carrying wire, the new time period of the magnet will be then
19
Aug
A vibration magnetometer placed in magnetic merlian has a small bar magnet. The magnet executes oscillations with a time period of 2s in earth’s horizontal magnetic field of 24muT. When a horizontal field of 18muT is produced opposite to the earth’s field by placing a current carrying wire, the new time period of the magnet [...]
The stress-strain curves are drawn for two different materials X and Y. It is observed that the ultimate strength point and the fracture point are close to each other for material X but are far apart for material Y. We can say that material X and Y are likely to be (respectively)
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Aug
The stress-strain curves are drawn for two different materials X and Y. It is observed that the ultimate strength point and the fracture point are close to each other for material X but are far apart for material Y. We can say that material X and Y are likely to be (respectively) If θ1 and [...]
If θ1 and θ2 be the apparent angles of dip observed in two vertical planes at right angles to each other, then the true angle of dip θ is given by
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Aug
If θ1 and θ2 be the apparent angles of dip observed in two vertical planes at right angles to each other, then the true angle of dip θ is given by If θ1 and θ2 be the apparent angles of dip observed in two vertical planes at right angles to each other then the true [...]
At a point A on the earth’s surface the angle of dip, σ=+25. At a point B on the earth’s surface the angle of dip , σ=−25. We can interpret that
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Aug
At a point A on the earth’s surface the angle of dip, σ=+25. At a point B on the earth’s surface the angle of dip , σ=−25. We can interpret that At a point A on the earth's surface the angle of dip σ=+25. At a point B on the earth's surface the angle of [...]
The relations amongst the three elements earth’s magnetic field, namely horizontal component H, vertical component V and dip delta are
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Aug
The relations amongst the three elements earth’s magnetic field, namely horizontal component H, vertical component V and dip delta are namely horizontal component H The relations amongst the three elements earth's magnetic field vertical component V and dip delta are August 19, 2020 Category: Chapter 24 - Magnetism and Matter , NEET Last 32 Years [...]
Following figures show the arrangement of bar magnets in different configurations. Each magnet has magnetic dipole m. Which configuration has highest net magnetic dipole moment?
19
Aug
Following figures show the arrangement of bar magnets in different configurations. Each magnet has magnetic dipole m. Which configuration has highest net magnetic dipole moment? Following figures show the arrangement of bar magnets in different configurations. Each magnet has magnetic dipole m. Which configuration has highest net magnetic dipole moment? August 19, 2020 Category: Chapter [...]
A bar magnet of length l and magnetic dipole moment M is bent in the form of an arc as shown in figure. The new magnetic dipole moment will be
19
Aug
A bar magnet of length l and magnetic dipole moment M is bent in the form of an arc as shown in figure. The new magnetic dipole moment will be A bar magnet of length l and magnetic dipole moment M is bent in the form of an arc as shown in figure. The new [...]
A bar magnet is oscillating in the earth’s magnetic field with a period T. What happens to its period and motion if its mass is quadrupled
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Aug
A bar magnet is oscillating in the earth’s magnetic field with a period T. What happens to its period and motion if its mass is quadrupled A bar magnet is oscillating in the earth's magnetic field with a period T. What happens to its period and motion if its mass is quadrupled August 11, 2020 [...]
The work done in turning a magnet of magnetic moment ‘M’ by an angle of 90∘ from the meridian is ‘n’ times the corresponding work done to turn it through an angle of 60∘, where ‘n’ is given by
11
Aug
The work done in turning a magnet of magnetic moment ‘M’ by an angle of 90∘ from the meridian is ‘n’ times the corresponding work done to turn it through an angle of 60∘, where ‘n’ is given by The work done in turning a magnet of magnetic moment 'M' by an angle of 90∘ [...]