Magnetism and Matter Test

Result

Magnetism and Matter Test - 30

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Weekly Quiz Competition

Question 1
4 / -1

When the N-pole of a bar magnet points towards the south and S-pole towards the north, the null points are at the

A
Magnetic axis

B
Magnetic centre

C
Perpendicular divider of magnetic axis

D
N and S poles
Question 2
4 / -1

Lines which represent places of constant angle of dip are called

A
Isobaric lines

B
Isogonic lines

C
Isoclinic lines

D
Isodynamic lines
Question 3
4 / -1

The vertical component of the earth\'s magnetic field is zero at a place where the angle of dip is

A
0°

B
45°

C
60°

D
90°
Question 4
4 / -1

A compass needle will show which of the following direction at the earth\'s magnetic pole

A
Vertical

B
No particular direction

C
Bent at 45° to the vertical

D
Horizontal
Question 5
4 / -1

The north pole of the earth\'s magnet is near the geographical

A
South

B
East

C
West

D
North
Question 6
4 / -1

The magnetic field of earth is due to

A
Motion and distribution of some material in and outside the earth

B
Interaction of cosmic rays with the current of earth

C
A magnetic dipole buried at the centre of the earth

D
Induction effect of the sun
Question 7
4 / -1

A short magnet of moment 6.75 Am² produces a neutral point on its axis. If horizontal component of earth\'s magnetic field is 5 × 10^–5 Wb/m², then the distance of the neutral point should be

A
10 cm

B
20 cm

C
30 cm

D
40 cm

Solution
Question 8
4 / -1

Due to the earth\'s magnetic field, charged cosmic ray particles

A
Required greater kinetic energy to reach the equator than the poles

B
Required less kinetic energy to reach the equator than the poles

C
Can never reach the equator

D
Can never reach the poles
Question 9
4 / -1

Two bar magnets with magnetic moment 2 M and M are fastened together at right angles to each other at their centres to form a crossed system, which can rotate freely about a vertical axis through the centre. The crossed system sets in earth\'s magnetic field with magnet having magnetic moment 2M making an angle θ with the magnetic meridian such that

A

B

C

D

Solution
Question 10
4 / -1

The value of angle of dip is zero at the magnetic equator because on it

A
V and H are equal

B
The value of V and H is zero

C
The value of V is zero

D
The value of H is zero