EASY
12th CBSE
IMPORTANT
Earn 100
Three identical specimens of magnetic materials Nickel, Antimony, Aluminium are kept in a uniform magnetic field. Draw the modification in the field lines in each case. Justify your answer.
Important Questions on Magnetism
EASY
12th CBSE
IMPORTANT
What are permanent magnets ? State, briefly, an efficient way of making a permanent magnet. Write two properties to select suitable materials for making permanent magnets.
EASY
12th CBSE
IMPORTANT
The susceptibility of a magnetic material is . Identify the type of magnetic material and state its two properties.
EASY
12th CBSE
IMPORTANT
The susceptibility of a magnetic material is . Identify the type of magnetic material and state its two properties.
EASY
12th CBSE
IMPORTANT
The relative magnetic permeability of a magnetic material is 800. Identify the nature of magnetic material and state its two properties.
EASY
12th CBSE
IMPORTANT
Draw magnetic field lines when a (i) diamagnetic (ii) paramagnetic substance is placed in an external magnetic field. Which magnetic property distinguishes this behaviour of the field lines due to the two substances?
EASY
12th CBSE
IMPORTANT
Briefly explain how will you demagnetise a piece of iron completely.
EASY
12th CBSE
IMPORTANT
Cosmic rays are charged particles that bombard earth's atmosphere from outer space. Why do the north and south magnetic poles of earth receive more low-energy cosmic rays than the magnetic equator.
EASY
12th CBSE
IMPORTANT
Two identical bar magnets and are placed in two identical uniform magnetic fields as shown in Figure. Justify that both the magnets are in equilibrium. Which one of these is in stable equilibrium? Give reasons for your answer.
