# What is the correct orientation of the bar magnet?

## What is the correct orientation of the bar magnet?

The lines of magnetic field from a bar magnet form closed lines. By convention, the field direction is taken to be outward from the North pole and in to the South pole of the magnet. Permanent magnets can be made from ferromagnetic materials.

## Why does a magnet have a north and south pole?

The force of a magnetic field on a particle with spin causes the particle to rotate it’s spin to align with the magnetic field. Taking these two ideas together, then, the Earth’s magnetic field will cause the magnet to align north to south. That’s why people named them the north and south poles.

## Where on a magnet is the magnetic force strongest?

Where on a magnet is the magnetic pull the strongest? The magnetic field generated by any magnet is always strongest at either pole. The magnetic force is equally as strong at both the north and south pole.

## What happens if you put a compass next to a magnet?

Notice that when the magnet is absent, the compass needle points north, but when the magnet is present, the needle points toward the magnet. This is because the compass needle is magnetized and mounted in a way that allows it to move in response to magnetic fields.

electromagnet

## What is Jaeger’s method?

Jaeger’s method is an experiment to calculate the surface tension using pressure. According to this method, the surface tension depends on the pressure difference and the radius of the capillary used in the experiment.

## What is quincke’s tube?

Quincke’s tube is a method’s apparatus which is used for determining the magnetic susceptibility of the given solution. It is a U shaped tube that has two limbs. One limb of the tube has a narrow width than the other limb. The liquid in the narrow limb does not change when the level in the wider limb.

## What is quink tube?

Quink’s Tube. Category : JEE Main & Advanced. This is an apparatus used to demonstrate the phenomenon of interference and also used to measure velocity of sound in air. This is made up of two U-tube A and B as shown in figure.

## When a source of known frequency is used for quincke’s tube we can determine?

We can’t tell how long each path along the tubes is, but we do know that they differ by an integer multiple of the wavelength λ: Δs1=k⋅λ, k=0,1,2,… And because 2x=Δs2−Δs1=λ, this apparatus can be used to measure the wavelength of sound of a fixed frequency.

## Why the meniscus level rise up or fall down in the presence or absence of an external uniform magnetic field?

A. The level rises because when magnetic field is applied the dipoles get aligned and hence gives rise to the liquid.

## How does a Gouy balance work?

The Gouy balance measures the apparent change in the mass of the sample as it is repelled or attracted by the region of high magnetic field between the poles. The sample is suspended between the magnetic poles through an attached thread or string.

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