Magnetism and Matter PYQs - Last 10 Years

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Practice 23 COMEDK 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 23 of 23 filtered questions.

1Magnetism And Matter

Paramagnetic substances
A. Move from a region of strong magnetic field to weak magnetic field
B. Has susceptibility less than zero
C. Attract strongly towards external magnetic field
D. Align themselves along the directions of external magn...

2Magnetism And Matter

A bar magnet of length 12 cm is placed such that its north pole points towards the geographic north. Two neutral points which are separated by 16 cm are obtained on the equatorial axis of the bar magnet. What is the pole strength of the bar...

3Magnetism And Matter

The material selected for making a permanent magnet should have:

4Magnetism And Matter

On both sides of a magnetic needle, two short magnets A and B are placed on the same horizontal line which is perpendicular to the magnetic meridian. The south poles of $A$ and $B$ are facing each other, which are 10 cm and 20 cm respective...

5Magnetism And Matter

Which of the following is not a characteristic of diamagnetism?

6Magnetism And Matter

A bar magnet is oscillating in the earth's magnetic field with a period $T$. When the length of the bar magnet is doubled and its mass is quadrupled, the time period is $T_1$. The ratio of $T_1$ to $T$ is

7Magnetism And Matter

A short bar magnet placed with its axis at $45^{\circ}$ with an external field of $400 \times 10^{-4} \mathrm{~T}$ experiences a torque of 0.024 Nm . If a solenoid of cross-sectional area $10^{-4} \mathrm{~m}^2$ and 500 turns replaces the s...

8Magnetism And Matter

A metal rod of susceptibility 799 is subjected to a magnetising field of $2000 \mathrm{Am}^{-1}$. The permeability of the material of the rod is: (Given $\mu_0=4 \pi \times 10^{-7} \mathrm{TmA}^{-1}$ )

9Magnetism And Matter

For a short magnet, the magnetic field on the axial line at a distance 10 cm from its centre is $1.6 \mathrm{~m} \times 10^{-7} \mathrm{~T}$. What is the magnetic field on its equatorial line at the same distance 10 cm from its centre?

10Magnetism And Matter

Steel is preferred to soft iron for making permanent magnets because,

11Magnetism And Matter

A bar magnet is held perpendicular to a uniform field. If the couple acting on the magnet is to be halved, by rotating it, the angle by which it is to be rotated is

12Magnetism And Matter

For a paramagnetic material, the dependence of the magnetic susceptibility \(\chi\) on the absolute temperature is given as

13Magnetism And Matter

The percentage increase in magnetic field \(\mathrm{B}\) when the space within a current carrying solenoid is filled with a medium of susceptibility 0.004 is

14Magnetism And Matter

The magnetic susceptibility of an ideal diamagnetic substance is

15Magnetism And Matter

Find the pole strength of a magnet of length \(2 \mathrm{~cm}\), if the magnetic field strength $B$ at distance \(10 \mathrm{~cm}\) from the centre of a magnet on the axial line of the magnet is \(10^{-4} \mathrm{~T}\).

16Magnetism And Matter

The magnetic permeability '\(\mu\)' a of a paramagnetic substance is :

17Magnetism And Matter

If \(\theta_1\) and \(\theta_2\) be the apparent angles of dip observed in two vertical planes at right angles to each other, then the true angle of \(\operatorname{dip} \theta\) is given by

18Magnetism And Matter

A bar magnet of length \(6 \mathrm{~cm}\), is placed in the magnetic meridian with \(N\) pole, pointing towards the geographical north. Two neutral points, separated by a distance of \(8 \mathrm{~cm}\) are obtained on the equitorial axis of...

19Magnetism And Matter

The relative permeability of iron is 6000. Its magnetic susceptibility is

20Magnetism And Matter

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?

21Magnetism And Matter

The angle of dip of at a place where horizontal
and vertical components of earth’s magnetic
field are equal is

22Magnetism And Matter

The angle which the total magnetic field of
earth makes with the surface of the earth is
called

23Magnetism And Matter

The intensity of magnetic field due to an isolated pole of strength \(m_p\) at a point distant \(r\) from it will be