A deflection magnetometer is placed in tanA position. The bar magnet is placed in :

Each of the two identical magnets, when suspended alone, makes 30 oscillations per minute at a place. The number of oscillations per minute, if they are fixed at right angles ( to form a cross) and allowed to oscillate in the same field will be approximate:

If the apparent value of dip at a place in two perpendicular vertical planes are respectively 30$°$ and 45$°$, then the true angle of dip at that place is

The magnetic moment of a magnet (10 cm$\times$4 cm$\times$1 cm) is 4 Am². Its intensity of magnetisation is :

If the magnetic field of the earth at any point on the magnetic equator is 0.4$\times$10^-4 T, then the value of the magnetic field at the magnetic pole of the earth is approximately

S.I. unit of intensity of magnetization is:

When the plane of a dip circle is along the magnetic meridian, the period of oscillations of dip needle is T₁. When the plane of dip circle is perpendicular to the magnetic meridian, the period of oscillations is T_2, then T₁/T₂ is (Angle of dip = 30$°$)

A ferromagnetic material is placed in an external magnetic field. The magnetic domains:

Magnetic permeability is maximum for

The area enclosed by hysteresis loop is a measure of :

Susceptibility of a substance at 300 K is -0.00002. Its susceptibility at 600K is

Line joining places of zero angle of dip on earth surface is called :

When a dip circle is kept at a place, the angle of dip obtained is 45$°$. When the dip circle is rotated about its vertical axis by 90$°$, the angle of dip obtained is 60$°$. The true dip at that place is :

When a substance is kept in a magnetic field, it gets repelled. Which of the following represents its susceptibility?

The time period of vibration of a bar-magnet in a vibration magnetometer is T. If the magnet is cut into n identical parts such that the length of each part is equal to the length of the original magnet, then the time period of vibration of one part in the vibration magnetometer is:

Magnetic susceptibility of a substance at 27$°$C is -0.00025. Its magnetic susceptibility at 127$°$C is :

Locus of all points having the same dip on the magnetic map of the earth is known as :

Consider a magnetic dipole kept in the east-west direction. Let P₁, P₂, Q₁, Q₂ be four points at the same distance from the dipole towards north, south, east and west of the dipole respectively. The directions of the magnetic field due to the dipole are the same only at :

Due to a small magnet, the intensity at a distance x in the end-on position is 9 gauss. What will be the intensity at a distance $\frac{x}{2}$ on equatorial position?

At the magnetic equator, the angle of dip is

The bar magnet A of magnetic moment M_A is found to oscillate at a frequency twice that of magnet B of magnetic moment M_B and the same moment of inertia when placed in a vibration magnetometer. We may say that :

Magnetic screening is:

The apparent dip at a place is always greater than or equal to the value of true dip at that place. This is due to

If a bar magnet is kept on a horizontal plane with N-pole of bar magnet facing geographic N-pole and S-pole of bar magnet facing geographic S-pole. Then the number of neutral points is :

1. 0

The magnetization of a piece of iron or steel:

A Gaussian surface is drawn enclosing the N-pole of a bar magnet. The net magnetic flux through the Gaussian surface will be:
(pole strength of N-pole is treated as positive and S-pole as negative)

A material when heated suddenly changes its magnetic property at a particular temperature and above this temperature, its susceptibility is found to be inversely proportional to the absolute temperature. The material may be :

At angle cos^{-1$\left(\frac{1}{\sqrt{3}}\right)$} to the magnetic meridian, the apparent dip is 60$°$. The true dip at the place is :

A long solenoid has 1500 turns per metre and an iron core of ${\mu }_r$ = 1100 is kept inside it. 2A current flows in the coil of the solenoid. If the core is heated beyond curie temperature then,

Choose the correct statement regarding magnetism.