Magnetism and Matter Test

Result

Magnetism and Matter Test - 31

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
4 / -1

The angle of dip at a certain place on earth is 60° and the magnitude of earth\'s horizontal component of magnetic field is 0.26 G. The magnetic field at the place on earth is

A
0.13G

B
0.26 G

C
0.52G

D
0.65G

Solution
Question 2
4 / -1

Time period of a freely suspended magnet does not depend upon

A
Length of the magnet

B
Pole strength of the magnet

C
Horizontal component of earth's magnetic field

D
Length of the suspension thread
Question 3
4 / -1

Magnetic moments of two bar magnets may be compared with the help of

A
Deflection magnetometer

B
Vibration magnetometer

C
Both of the above

D
None of the above
Question 4
4 / -1

The time period of oscillation of a freely suspended bar magnet with usual notations is given by

A

B

C

D

Solution
Question 5
4 / -1

In sum and difference method in vibration magnetometer, the time period is more if

A
Similar poles of both magnets are on same sides

B
Opposite poles of both magnets are on same sides

C
Both magnets are perpendicular to each other

D
Nothing can be said
Question 6
4 / -1

At a certain place a magnet makes 30 oscillations per minute. At another place where the magnetic field is double, its time period will be

A
4 sec

B
2 sec

C
1/2 sec

D
√2 sec

Solution
Question 7
4 / -1

Two magnets of same size and mass make respectively 10 and 15 oscillations per minute ar certain place. The ratio of their magnetic moments is

A
4 : 9

B
9 ; 4

C
2 : 3

D
3 : 2

Solution
Question 8
4 / -1

Time period for a magnet is T. It if is divided in four equal parts along its axis and perpendicular to its axis as shown then time period for each part will be

A
4 T

B
T/4

C
T/2

D
T

Solution
Question 9
4 / -1

Two tangent galvanometers A and B have coils of radii 8 cm and 16 cm respectively and resistance 8 Ω each. They are connected in parallel with a cell of e.m.f. 4 V and negligible integral resistance. The deflections produced in the tangent galvanometers A and B are 30° and 60° respectively. It A has 2 turns, then B must have

A
18 turns

B
12 turns

C
6 turns

D
2 turns

Solution
Question 10
4 / -1

Two uniform magnetic fields B and H are perpendicular to each other at a place. When a magnetic needle is placed in the field, it rest making angle 60° and 30° with B and H respectively. The value of B : H is

A
1 : 2

B
2 : 1

C
√3 : 1

D
1 : √3

Solution