Define the angle of dip and the angle of declination.
(N/A) $1$. Angle of Dip (Magnetic Inclination): The angle of dip is the angle that the total magnetic field of the Earth makes with the surface of the Earth (horizontal direction) at a given location. It is $0^{\circ}$ at the magnetic equator and $90^{\circ}$ at the magnetic poles.
$2$. Angle of Declination: The angle of declination is the angle between the geographic meridian (true north-south line) and the magnetic meridian (the plane containing the magnetic axis of the Earth) at a specific point on the Earth's surface.
$2$. Angle of Declination: The angle of declination is the angle between the geographic meridian (true north-south line) and the magnetic meridian (the plane containing the magnetic axis of the Earth) at a specific point on the Earth's surface.
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Similar Questions
The line on the earth's surface joining the points where the magnetic field is horizontal is known as:
Easy
View SolutionAssertion: If a compass needle is kept at the magnetic north pole of the Earth,the compass needle may stay in any direction.
Reason: $A$ dip needle will stay vertical at the north pole of the Earth.
Reason: $A$ dip needle will stay vertical at the north pole of the Earth.
Assume the dipole model for Earth's magnetic field $B$,which is given by:
$B_{V} = \text{vertical component of magnetic field} = \frac{\mu_{0}}{4\pi} \frac{2m \cos \theta}{r^{3}}$
$B_{H} = \text{horizontal component of magnetic field} = \frac{\mu_{0}}{4\pi} \frac{m \sin \theta}{r^{3}}$
where $\theta = 90^{\circ} - \text{latitude}$ as measured from the magnetic equator.
$(a)$ Find the loci of points for which $|\vec{B}|$ is minimum.
$B_{V} = \text{vertical component of magnetic field} = \frac{\mu_{0}}{4\pi} \frac{2m \cos \theta}{r^{3}}$
$B_{H} = \text{horizontal component of magnetic field} = \frac{\mu_{0}}{4\pi} \frac{m \sin \theta}{r^{3}}$
where $\theta = 90^{\circ} - \text{latitude}$ as measured from the magnetic equator.
$(a)$ Find the loci of points for which $|\vec{B}|$ is minimum.
Difficult
View SolutionAt a certain place,the horizontal component of earth's magnetic field is $\sqrt{3}$ times the vertical component. The angle of dip at that place is....$^o$
Medium
View SolutionAssertion : In high latitudes,one sees colourful curtains of light hanging down from high altitudes.
Reason : The high-energy charged particles from the sun are deflected to polar regions by the magnetic field of the earth.
Reason : The high-energy charged particles from the sun are deflected to polar regions by the magnetic field of the earth.
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