MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 9 - Magnetism>Evaluation Test>Q 9

EASY

MHT-CET

IMPORTANT

Earn 100

Select the correct option:
i. Susceptibility of a diamagnetic substance is high and negative.
ii. In paramagnetic substance, the intrinsic magnetic moment is not zero.
iii. When a paramagnetic substance is heated, it becomes ferromagnetic.
iv. Spin exchange interaction is present in the absence of external magnetic field.

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Important Questions on Magnetism

HARD

MHT-CET

IMPORTANT

MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 9 - Magnetism>Evaluation Test>Q 10

A toroid has

1500 turns

and the inner and outer radii of its core

6 cm

and

8 cm

respectively. The magnetic field in the core for a current of

0.5 A

is

2 T

. The relative permeability of core is

HARD

MHT-CET

IMPORTANT

MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 9 - Magnetism>Evaluation Test>Q 11

An iron rod of volume

10^{- 4} m^{3}

and relative permeability

900

is placed inside a long solenoid wound with

6 turns per cm

. If a current of

0.4 A

is passed through the solenoid, the magnetic moment of the rod is

HARD

MHT-CET

IMPORTANT

MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 9 - Magnetism>Evaluation Test>Q 12

A small coil

C

with

N = 100

turns is mounted on one end of a balance beam and introduced between the poles of an electromagnet as shown in the figure. The cross-sectional area of coil is

A = 1.0 {cm}^{2}

, length of the arm

O A

of the balance beam is,

l = 20 cm

. When there is no current in the coil, the balance is in equilibrium. On passing a current

i = 18 A

through the coil, the equilibrium is restored by putting the additional counter weight of mass

Δm = 40 gm

on the balance pan. Find the magnetic induction at the spot where coil is located.
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EASY

MHT-CET

IMPORTANT

MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 9 - Magnetism>Evaluation Test>Q 14

Assertion: Any instrument can be protected from an external magnetic field by putting it inside a wooden box.

Reason: Iron is a magnetic substance.