Pole of a mirror is the geometrical center of the spherical surface of the mirror. Principal axis is the straight line that joins the pole of the mirror to its center of curvature. Center of curvature of mirror is the center of the sphere of which the mirror is part of.
What is pole short answer?
countable noun. A pole is a long thin piece of wood or metal, used especially for supporting things.
What is the definition of pole in science?
Scientific definitions for pole pole. [ pōl ] Mathematics. Either of the points at which an axis that passes through the center of a sphere intersects the surface of the sphere. The fixed point used as a reference in a system of polar coordinates.
What is pole of a magnet in physics?
magnetic pole, region at each end of a magnet where the external magnetic field is strongest. A bar magnet suspended in Earth’s magnetic field orients itself in a north–south direction. The north-seeking pole of such a magnet, or any similar pole, is called a north magnetic pole.
What is a unit pole?
Definition of unit magnetic pole : a unit of magnetic pole strength equal to the strength of a magnetic pole that repels an identical pole at a distance of one centimeter with a force of one dyne.
Where are the poles?
A geographical pole or geographic pole is either of the two points on Earth where its axis of rotation intersects its surface. The North Pole lies in the Arctic Ocean while the South Pole is in Antarctica.
Why are poles called poles?
The tribe’s name stems from the Proto-Indo European *pleh₂-, which means flat or flatland and corresponds to the topography of a region that the Western Polans initially settled. The prefix pol- is used in most world languages when referring to Poles (Spanish polaco, Italian polacche, French polonais, German Pole).
What are types of poles?
They can be divided into three types namely; Tangent distribution poles, guyed distribution poles, and self-supporting distribution poles.
What is the use of pole?
A pole is a rounded stick or rod, usually made of wood, plastic, or metal. You need a pole for hanging a flag, catching fish, or setting up a tent.
What is pole and principal axis?
Pole:The geometric centre of the spherical surface of mirror is called the pole of mirror. Principal axis:It is the straight line joining the pole of the mirror to its centre of curvature. Centre of curvature:The centre of curvature of a mirror is the centre of the sphere of which the mirror is a part.
Where is pole of a mirror?
Solution : Pole – The geometric centre of the mirror is called pole. The mid point of aperture AB is P, P is the pole of the mirror.
What is pole in convex mirror?
Pole: It is the centre of the reflecting surface of a spherical mirror. It lies on the surface of the mirror and it is usually denoted by P. 2.
How many poles are in magnet?
Magnets have two poles, a north pole and a south pole. The magnetic field is represented by field lines that start at a magnet’s north pole and end at the south pole.
Where is the magnetic pole?
Based on the current WMM model, the 2020 location of the north magnetic pole is 86.50°N and 164.04°E and the south magnetic pole is 64.07°S and 135.88°E. The locations of the poles (1590-2025) from the latest IGRF are available for download here: North Pole, South Pole.
Why are the poles magnetic?
Scientists believe that the charges created by the moving metallic material move around Earth’s equatorial region in a circular motion which generates the north and south magnetic poles at the surface, said Ingram.
What is the pole strength?
Definition of pole strength : a quantity corresponding to the amount of magnetic flux emanating from a given magnetic pole and expressed in terms of the unit magnetic pole.
What is Lenz force?
Lenz’s law states that. The induced electromotive force with different polarities induces a current whose magnetic field opposes the change in magnetic flux through the loop in order to ensure that the original flux is maintained through the loop when current flows in it.
What is pole strength and its unit?
Pole strength is given by m=M/2l. Unit of magnetic dipole moment is Am2. Therefore, unit of pole strength will be Am.
Do the poles move?
According to the latest IGRF, the Pole is currently moving in the same direction but at a slightly reduced speed of about 45 km per year. NCEI and CIRES scientists created an animation showing changes in declination location and the “wandering” of the North Magnetic Pole over the last 50 years.
What are the poles Class 5?
Answer. Earth has two geographic poles: the North Pole and the South Pole. They are the places on Earth’s surface that Earth’s imaginary spin axis passes through. Our planet also has two magnetic poles: the North Magnetic Pole and the South Magnetic Pole.
What is pole and order?
DEFINITION: Pole A point z0 is called a pole of order m of f(z) if 1/f has a zero of order m at z0. Identifying Poles and Zeroes. Let f be analytic. Then f has a zero of order m at z0 if and only if f(z) can be written as f(z) = g(z)(z − z0)m where g is analytic at z0 and g(z0) = 0.
What are the two poles of magnet?
The end that faces the north is called the north-seeking pole, or north pole, of the magnet. The other end is called the south pole. When two magnets are brought together, the opposite poles will attract one another, but the like poles will repel one another.
Who connect both poles?
The line that connects pole is called axis.
What are the two types of pole?
- P.C.C. Poles:
- R.C.C. Poles:
What called electric pole?
It can be referred to as a transmission pole, telephone pole, telecommunication pole, power pole, hydro pole, telegraph pole, or telegraph post, depending on its application.