Magnetism and Matter PYQs - Last 10 Years

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Practice 24 AP EAPCET Physics questions from Magnetism and Matter. Use the year-wise and type-wise breakdown to prioritize recent PYQs, then continue into the question list below.

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Last 10 Years Magnetism and Matter Questions

Showing 24 of 24 filtered questions.

1Magnetism And Matter

If the given figure shows the relation between magnetic field ( $B$-along $Y$-axis) and magnetic intensity ( $H$-along $X$-axis) of a ferromagnetic material, then the point that represents coercivity of the material is

2Magnetism And Matter

A sample of a ferromagnetic iron in the shape of a cube of side $1.0 \mu \mathrm{~m}$ contains $8.7 \times 10^{28}$ atoms per cubic metre and the magnetic dipole moment of each iron atom is $93 \times 10^{-24} \mathrm{Am}^2$. Then, the maxi...

3Magnetism And Matter

A sample of paramagnetic salt contains $2 \times 10^{24}$ atomic dipoles each of dipole moment $15 \times 10^{-23} \mathrm{JT}^{-1}$. The sample is placed under homogeneous magnetic field of 0.6 T and cooled to a temperature 4.2 K . The deg...

4Magnetism And Matter

Materials suitable for permanent magnets should have

5Magnetism And Matter

The work done in rotating a bar magnet which is initially in the direction of a uniform magnetic field through $45^{\circ}$ is $W$. The additional work to be done to rotate the magnet further through $15^{\circ}$ is

6Magnetism And Matter

A short bar magnet has a magnetic moment of $0.48 \mathrm{JT}^{-1}$. The magnitude of magnetic field at a point at 10 cm distance from the centre of the magnet on its axis is

7Magnetism And Matter

A short bar magnet of magnetic moment $10^4 \mathrm{JT}^{-1}$ is free to rotate in a horizontal plane. The work done in rotating the magnet slowly from the direction parallel to a horizontal magnetic field of $4 \times 10^{-5} \mathrm{~T}$ ...

8Magnetism And Matter

A short bar magnet is placed in a uniform magnetic field of 2 T such that the axis of the magnet makes an angle of $45^{\circ}$ with the direction of the magnetic field. If the torque acting on the magnet is $0.36 \sqrt{2} \mathrm{~N}-\math...

9Magnetism And Matter

The relation between $\mu$ and $H$ for a specimen of iron is $\mu=\left[\frac{1.4}{H}+12 \times 10^{-4}\right] \mathrm{Hm}^{-1}$. The value of $H$ which produces flux density of 1 T will be ( $\mu=$ magnetic permeability, $H=$ magnetic inte...

10Magnetism And Matter

If the vertical component of the earth's magnetic field is 0.45 G at a location and angle of dip is $60^{\circ}$, then magnetic field of earth in that location is

11Magnetism And Matter

At a place the horizontal component of earth's magnetic field $3 \times 10^{-5} \mathrm{~T}$ and the magnetic declination is $30^{\circ}$. A compass needle of magnetic moment $18 \mathrm{Am}^2$ pointing towards geographic north at this plac...

12Magnetism And Matter

Any magnetic material loses its magnetic property when it is

13Magnetism And Matter

At a place where the magnitude of the earth's magnetic field is $4 \times 10^{-5} \mathrm{~T}$, a short bar magnet is placed with its axis perpendicular to the earth's magnetic field direction. If the resultant magnetic field at a point at ...

14Magnetism And Matter

The domain in ferromagnetic material is in the form of a cube of side $2 \mu \mathrm{~m}$. Number of atoms in that domain is $9 \times 10^{10}$ and each atom has a dipole movement of $9 \times 10^{-24} \mathrm{Am}^2$. The magnetisation of t...

15Magnetism And Matter

A magnet suspended in a uniform magnetic field is heated, so as to reduce its magnetic moment by $19 \%$. By doing this, the time period of the magnet approximately

16Magnetism And Matter

A solenoid has a core of a material with relative permeability 400 . The windings of the solenoid are insulated from the core and carry of 4 A . If the number of turns is 500 per metre, then the magnetising field is

17Magnetism And Matter

One of the following substances having the tendency to move from stronger region to the weaker region of the magnetic field is

18Magnetism And Matter

Among the following the unit of permeability is NOT represented by

19Magnetism And Matter

Two short magnets of equal dipole moments \(M\) are fastened perpendicularly at their centres. The magnitude of the magnetic field at a distance \(d\) from the centre on the bisector of the right angle is
(\(\mu_0=\) Permeability of free sp...

20Magnetism And Matter

A compass needle oscillates 20 times per minute at a place where the dip is \(45^{\circ}\) and the magnetic field is \(B_1\). The same needle oscillates 30 times per minute at a place where the dip is \(30^{\circ}\) and magnetic field is $$...

21Magnetism And Matter

A magnetic needle free to rotate in a vertical plane parallel to the magnetic meridian has its north tip pointing down at \(30^{\circ}\) with the horizontal. The horizontal component of the earth's magnetic field at the place is 0.3 G . The...

22Magnetism And Matter

A steel wire of length \(l\) and magnetic moment \(M\) is bent into a semicircular arc of radius \(R\). The new magnetic moment is

23Magnetism And Matter

A paramagnetic sample showing a net magnetisation of \(0.8 \mathrm{~A} \mathrm{~m}^{-1}\), when placed in an external magnetic field of strength \(0.8 \mathrm{~T}\), at a temperature \(5 \mathrm{~K}\). If the temperature is raised to $$20 \...

24Magnetism And Matter

The plane of a dip circle is set in the geographic meridian and the apparent dip is \(\delta_1\). It is then set in a vertical plane perpendicular to the geographic meridian. The apparent dip angle is \(\delta_2\). The declination $$\theta$...