MEDIUM
NEET
IMPORTANT
Earn 100

A magnet is placed horizontally on the ground with its north pole towards the magnetic north pole of the earth. The neutral point is obtained

50% studentsanswered this correctly

Important Questions on Magnetism and Matter

EASY
NEET
IMPORTANT
Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment>Q 17
The value of horizontal component of earth's magnetic field at a place is 0.35×10-4 T. If the angle of dip is 60°, the value of vertical component of earth's magnetic field is nearly
MEDIUM
NEET
IMPORTANT
Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment>Q 18
The period of oscillation of a magnet of a vibration magnetometer is 2.45 s at one place and 4.9 s at the other. The ratio of the horizontal component of earth magnetic field at the two places is
MEDIUM
NEET
IMPORTANT
Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment>Q 19
If ϕ is latitude and δ is dip at a place then
EASY
NEET
IMPORTANT
Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment>Q 20

If declination at a place is known to be 15°E. And a compass needle points as shown, then geographic north is represented by the direction numbered.

Question Image

EASY
NEET
IMPORTANT
Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment>Q 21
A dip circle lies initially in the magnetic meridian, it shows an angle of dip δ at a place. The dip circle is rotated through an angle α in the horizontal plane and then it shows an angle of dip δ'. Hencetanδ'tanδ is
EASY
NEET
IMPORTANT
Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment>Q 22
If a dip circle is placed in a vertical plane at an angle of 30° to the magnetic meridian, the dip needle makes an angle of 45° with the horizontal. The real dip at that place is
HARD
NEET
IMPORTANT
Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment>Q 23
If ϕ1 and ϕ2 be the angles of dip observed in two vertical planes at right angles to each other and ϕ be the true angle of dip, then
EASY
NEET
IMPORTANT
Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment>Q 24
Time period of oscillations of a magnet of magnetic moment M and moment of inertia I in a vertical plane perpendicular to the magnetic meridian at a place where earth's horizontal and vertical component of magnetic field are BH and BV respectively is