1
MHT CET (PCB) 2025 9th April Evening Shift
MCQ (Single Correct Answer)
+1
-0

Out of the following properties describing diamagnetism, identify the property which is "WRONG"

A

Diamagnetic materials possess no net magnetic dipole moment.

B

Diamagnetic materials are repelled by a magnet.

C

When placed in external magnetic field diamagnetic materials move from stronger to weaker part of magnetic field.

D

The magnetic susceptibility of diamagnetic materials is positive.

2
MHT CET (PCB) 2025 9th April Morning Shift
MCQ (Single Correct Answer)
+1
-0

A solenoid has core of a material with relative permeability 301 and its winding carries a current of 2 A . The number of turns of the solenoid is 600 per metre. The magnetization of the material is

A

$3.6 \times 10^{-5} \mathrm{~A} / \mathrm{m}$

B

$3.6 \times 10^5 \mathrm{~A} / \mathrm{m}$

C

$1.8 \times 10^{-5} \mathrm{~A} / \mathrm{m}$

D

$1.8 \times 10^5 \mathrm{~A} / \mathrm{m}$

3
MHT CET (PCB) 2024 22th April Evening Shift
MCQ (Single Correct Answer)
+1
-0

A magnet having a magnetic dipole moment ' M is placed in two magnetic fields ' $\mathrm{B}_1$ ' and ' $\mathrm{B}_2$ ' respectively. If it is displaced slightly from the equilibrium position, it oscillates 60 times in 20 second in field ' $\mathrm{B}_1$ ' and 60 times in 30 second in field ' $B_2$ '. The ratio of field ' $B_1$ ' to that of ' $\mathrm{B}_2{ }^{\prime}$ is

A
$3: 2$
B
$9: 4$
C
$2: 3$
D
$4: 9$
4
MHT CET (PCB) 2024 22th April Evening Shift
MCQ (Single Correct Answer)
+1
-0

Rods ' $A$ ', ' $B$ ' and ' $C$ ' are made of a paramagnetic, a ferromagnetic and a diamagnetic substance respectively. A magnet is brought close to them, it will

A
repel all three substances.
B
attract ' $A$ ' strongly, ' $B$ ' weakly and repel 'C' weakly.
C
attract ' $A$ ' strongly but repel both ' $B$ ' and 'C' weakly.
D
attract ' $A$ ' weakly, ' $B$ ' strongly and repel 'C' weakly.

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