EASY
NEET
IMPORTANT
Earn 100

Define the terms retentivity and coercivity.

Important Questions on Magnetism and Matter

EASY
NEET
IMPORTANT
Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment Set-1>Q 23
A bar magnet of magnetic moment 5.0 A m2 has poles 20 cm apart. Calculate the pole strength.
HARD
NEET
IMPORTANT
Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment Set-1>Q 24
What will be the value of the vertical component and total strength of earth's magnetic field at a place where dip is 60°? Horizontal component is 0.3 G.
EASY
NEET
IMPORTANT
Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment Set-1>Q 26
Is it possible that a magnet has three poles?
EASY
NEET
IMPORTANT
Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment Set-1>Q 27
What do you mean by "Earth's magnetic element"? Name the device which is used to measure angle of dip.
MEDIUM
NEET
IMPORTANT
Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment Set-1>Q 28
Three identical specimens of magnetic materials nickel, antimony and aluminium are kept in a non uniform magnetic field. Draw the modifications in the field lines in each case.
EASY
NEET
IMPORTANT
Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment Set-1>Q 30

Define the terms the intensity of magnetization.

EASY
NEET
IMPORTANT
Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment Set-1>Q 30

Define the terms magnetic susceptibility and magnetic permeability. Derive the relation between relative magnetic permeability and magnetic susceptibility.

MEDIUM
NEET
IMPORTANT
Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment Set-2>Q 1
Suppose an isolated north pole is kept at the centre of a circular loop carrying a electric current i. The magnetic field due to the north pole at a point on the periphery of the wire is B. The radius of the loop is a. The force on the wire is