Paramagnetic Materials - Physics Class XII
Quiz covering properties, behavior, and characteristics of paramagnetic materials including magnetic susceptibility, permeability, and response to magnetic fields for Class XII Physics students
Questions
Out of given paramagnetic substance (Calcium, Chromium, Oxygen and Tungsten) which substance has maximum susceptibility?
- Calcium
- Chromium
- Oxygen
- Tungsten
A paramagnetic liquid is taken in a U-tube and arranged so that one of its limbs is kept between pole pieces of the magnet. The liquid level in the limb is
- goes down
- rises up
- remains same
- first goes down and then rise
The magnetic susceptibility of a paramagnetic material at $-73^0$ is $0.0075$, its value at $-173^0$C will be
- $0.0045$
- $0.0030$
- $0.015$
- $0.0075$
Assertion : Paramagnetic substances get weakly attracted to a magnet.
Reason : They have tendency to move from a region of strong magnetic field to weak magnetic field
- If both assertion and reason are true and reason is the correct explanation of assertion.
- If both assertion and reason are true and reason is not the correct explanation of assertion.
- If assertion is true but reason is false.
- If both assertion and reason are false
Consider the following statements I and II.
(I) Paramagnetism is explained by domain theory
(II) Susceptibility of a diamagnetic substance is independent of temperature.
Identify the correct choice from the following.
- Both I and II are correct
- Both I and II are incorrect
- I is correct and II is incorrect.
- I is incorrect and II is correct
The meniscus of a liquid contained in one of the limbs of a narrow U-tube is held electromagnet with the meniscus in line with the field. The liquid is seen to rise. This indicates that the liquid is
- anti-ferromagnetic
- paramagnetic
- diamagnetic
- non-magnetic
Metals getting magnetised by orientation of atomic magnetic moments in external magnetic field are called
- diamagnetics
- paramagnetics
- ferromagnetics
- antimagnetics
Magnetic permeability of paramagnetic substances is?
- $0$
- $> 1$
- $< 1$
- $1$
What is not true about paramagnetic substances?
- When freely suspended in a uniform magnetic field, they align themselves parallel to the magnetic field
- The magnetic susceptibility of paramagnetic substances has a small negative value
- Para-magnetism is temperature dependent
- They are feebly attracted by a magnet
How will you quantize the relative permeability of a paramagnetic substance ?
- Much more than one
- Slightly more than one
- Less than one but greater than zero
- Zero
Some metals get magnetised by orientation of atomic magnetic moments in external magnetic field. What are they called ?
- just magnets
- Paramagnetics
- dimagnetics
- ferromagnetic
The relative permeability is represented by $\mu _r$ and the susceptibility by $\chi$ for a magnetic substance. Then, for a paramagnetic substance. Then, for a paramagnetic substance
- $\mu _r> 1, \chi >0$
- $\mu _r> 1, \chi < 0$
- $\mu _r > 1, \chi >0$
- $\mu _r < 1, \chi < 0$
Substances in which the magnetic moment of a
single atom is not-zero
- diamagnetic
- ferromagnetic
- paramagnetic
- electromagnetic
A paramagnetic substance when placed in an externally applied non-uniform magnetic field tends to ___________.
- increase the applied field
- decrease the applied field
- vary the applied field
- change the applied field
When the atomic magnetic moments are randomly oriented in a solid its magnetic behavior is termed as
- semi-magnetic.
- anti-ferromagnetic.
- paramagnetic.
- poly crystalline.
Liquid oxygen remains suspended between two pole forces of a magnet because it is:
- diamagnetic
- paramagnetic
- ferromagnetic
- antiferromagnetic
A substance is placed in a non uniform magnetic field. It experiences weak force towards the strong field. The substance is _________ type.
- Ferromagnetic
- Diamagnetic
- Paramagnetic
- None of these