CBSE
Multiple Choice QuestionsThe magnetic susceptibility of an ideal diamagnetic substance is
1
0
+1
∞
The magnetic moment has dimensions of
[ LA ]
[ L2A ]
[ L T-1 A ]
[ L2 T-1 A ]
Assertion: Diamagnetic materials can exhibit magnetism.
Reason: Diamagnetic materials have permanent magnetic dipole moment.
If both assertion and reason are true and reason is the correct explanation of the assertion
If both assertion and reason are true but reason is not the correct explanation of the assertion
If assertion is true, but reason is false
Both assertion and reason are false statements.
Liquid oxygen remains suspended between two pole faces of a magnet because it is
diamagnetic
paramagnetic
ferromagnetic
antiferromagnetic
Assertion: A famous painting was painted by not using brush strokes in the usual manner, but rather a myriad of small color dots. In this painting the color you see at any given place on the painting changes as you move away.
Reason: The angular seperation of adjacent dots changes with the distance from the painting.
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false
A frog can be levitated in a magnetic field produced by a current in a vertical solenoid placed below the frog. This is possible because the body of the frog behaves as
paramagnetic
diamagnetic
ferromagnetic
antiferromagnetic
The magnetic needle of a tangent galvanometer is deflected at an angle 30° due to a magnet. The horizontal component of earth's magnetic field 0.34 x 10-4 T is along the plane of the coil. The magnetic intensity is
1.96 × 10-4 T
1.96 × 104 T
1.96 × 10-5 T
1.96 × 105 T
Velocity of light is equal to
εo/ μo
Assertion: Faraday's laws are consequences of conservation of energy.
Reason: In a purely resistive A.C. circuit, the current lags behind the e.m.f. in phase.
If both the assertion and reason are true and reason is a correct explanation of the assertion.
If both assertion and reason are true but assertion is not a correct explanation of the assertion.
If the assertion is true but the reason is false.
If both assertion and reason are false.
A copper rod is suspended in a non-homogeneous magnetic field region. The rod when in equilibrium will align itself
in the region where magnetic field is strongest
in the region where magnetic field is weakest and parallel to direction of magnetic field there
in the direction in which it was originally suspended
in the region where magnetic field is weakest and perpendicular to the direction of magnetic field there
