What is pole in short answer?

pole in British English 1. a long slender usually round piece of wood, metal, or other material.

What is pole in physics mirror?

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 class 10th?

Pole: The centre of reflecting surface. It is represented by letter P.Centre of Curvature: The centre of the sphere of which the mirror forms the part.

What is pole in concave mirror?

Pole: It is the center of the reflecting surface of the concave mirror also called vertex of mirror, generally denoted by letter ‘P’. Center of curvature: It is the center of that sphere of which the concave mirror forms a part, denoted by letter ‘C’.

Which pole is magnetic?

One easy way to tell which pole is north and which is south is to set your magnet near a compass. The needle on the compass that normally points toward the north pole of the Earth will move toward the magnet’s south pole. Wanna know a secret? This works because the needle in a compass is actually a magnet!

What is magnetic pole?

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 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.

What is pole in convex mirror?

Pole is the geometrical center of convex or concave mirror where the principal axis meets the mirror surface as shown in figure.

How many poles are there in a mirror?

The correct answer is option 2, i.e., It is the center of the reflecting surface of the spherical mirror. The Pole of a spherical mirror (convex or concave) is the center of the reflecting surface of the spherical mirror. It lies on the surface of the spherical mirror. It is denoted by the alphabet ‘P’.

What is called principal axis?

principal axis. noun. the line passing through the optical centre and centres of curvature of the faces of a lens or a curved mirror. any of three mutually perpendicular axes about which the moment of inertia of a body is maximum.

What is the difference between pole and centre of curvature?

Pole: The centre of reflecting surface. It is represented by letter P. Centre of Curvature: The centre of the sphere of which the mirror forms the part.

What is pole of reflection of light?

Pole (p): Pole is the midpoint of a mirror. It’s twice the focus. Focus: It is any point, where light rays parallel to the principal axis, will converge after reflecting from the mirror.

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.

Who is diverging mirror?

A convex mirror is sometimes referred to as a diverging mirror due to the fact that incident light originating from the same point and will reflect off the mirror surface and diverge.

How do you find the poles of a mirror?

Do all magnets have 2 poles?

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. When most people think of magnetism, they think about the magnetic force experienced between two magnets.

Which poles attract magnets?

A magnet has two ends called poles; one end is the north pole and the other is the south pole. A north pole will attract a south pole; the magnets pull on each other. But the two north poles will push each other away. We say the magnets repel each other.

What called poles?

Geographical pole, either of two fixed points on the surface of a spinning body or planet, at 90 degrees from the equator, based on the axis around which a body spins. North Pole, the northernmost point on the surface of the Earth, where the Earth’s axis of rotation intersects the Earth’s surface.

What are the 2 poles?

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.

Why do magnets have 2 poles?

The arrows always start at the magnet’s north pole and point towards its south pole. When two like-poles point together, the arrows from the two magnets point in OPPOSITE directions and the field lines cannot join up. So the magnets will push apart (repel).

What is pole class9?

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.

What is principal axis of mirror?

The straight line passing through the pole and the center of curvature of the spherical mirror is called the principal axis of a spherical mirror. The principal axis of a spherical mirror is the line passing through the center of the mirror that is exactly perpendicular to the surface of the mirror.

What is called centre of curvature?

Definition of center of curvature : the center of the circle whose center lies on the concave side of a curve on the normal to a given point of the curve and whose radius is equal to the radius of curvature at that point.

Where is pole in convex lens?

Answer. Answer: pole -The geometrical center of convex or concave mirror where the principal axis meets the mirror surface is called pole.

What is pole called I in lens?

The center of the optical lens is known as ‘Pole’

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