Advertisements
Advertisements
प्रश्न
A ferromagnetic substance becomes a permanent magnet when it is placed in a magnetic field becuase ______.
पर्याय
all the domains get oriented in the direction of magnetic field.
all the domains get oriented in the direction opposite to the direction of magnetic field.
domains get oriented randomly.
domains are not affected by magnetic field.
Advertisements
उत्तर
A ferromagnetic substance becomes a permanent magnet when it is placed in a magnetic field becuase all the domains get oriented in the direction of magnetic field.
Explanation:
Ferromagnetic solids can be permanently magnetised and then all the domains get oriented in the direction of applied magnetic field.
APPEARS IN
संबंधित प्रश्न
Iron (z=26) is highly ferromagnetic. Explain.
What type of magnetism is shown in the following alignment of magnetic moments?
Write the type of magnetism observed when the magnetic moments are oppositely aligned and cancel out each other.
What type of substances would make better permanent magnets, ferromagnetic or ferrimagnetic. Justify your answer.
Analysis shows that nickel oxide has the formula Ni0.98O1.00. What fractions of nickel exist as Ni2+ and Ni3+ ions?
Give reasons:Ferrimagnetic substances show better magnetism than antiferromagnetic substances.
The complexion [Ni(CN)4]2- is:
Out of [CoF6]3- and [Co(en)3]3+, which one complex is
(i) paramagnetic
(ii) more stable
(iii) inner orbital complex and
(iv) high spin complex
(Atomic no. of Co = 27)
Compare dia, para and ferromagnetism.
What happens to the domains in a ferromagnetic material in the presence of external magnetic field?
Substances that are strongly attracted by the applied magnetic field and can be permanently magnetized are ____________.
Fe3O4 is ____________.
Which type of substances would make better permanent magnets?
Assertion: On heating ferromagnetic or ferrimagnetic substances, they become paramagnetic.
Reason: The electrons change their spin on heating.
Some of the polar crystals when heated produces small electrical current. This phenomenon is called ______.
The correct order of bond strength is ______.
Which of the following statements are correct?
- Electric monopoles do not exist whereas magnetic monopoles exist.
- Magnetic field lines due to a solenoid at its ends and outside cannot be completely straight and confined.
- Magnetic field lines are completely confined within a toroid.
- Magnetic field lines inside a bar magnet are not parallel.
- χ = -1 is the condition for a perfect diamagnetic material, where x is its magnetic susceptibility.
Which of the following is not paramagnetic?
