## Earth's magnetism- MCQ-Basic

Physics is an important subject in preparation for various Competitive exams. To keep a track of your preparation we have designed a small quiz of 10 Basic Level Questions on Earth's magnetism.You have 10 minutes to solve the quiz, click the start timer button in order to start the timer and then click on submit button at the end to submit the quiz and view your scores and correct answers.

Q1. At a place the angle of dip is 30°. If the horizontal component of earth's magnetic field is H, then the total field intensity will be given by

•  H/2
•  2H/√3
•  H√2
•  H√3

2H/√3

Q2. I is the total intensity of earth's magnetic field, H its horizontal component and V the vertical component then these are related as

•  I = H2 + V2
•  I = H + V
•  I2 = H + V
•  I2 = H2 + V2

I2 = H2 + V2

Q3. At a certain place, the horizontal component B0 and the vertical component V0 of the earth's magnetic field are equal in magnitude. The total intensity at the place will be

•  B0
•  B0 2
•  2B0
•  √2B0

√2B0

Q4. At a certain place, the horizontal component of earth's magnetic field is √3 times the vertical component. The angle of dip at this place is

•  75°
•  60°
•  45°
•  30°

30°

Q5. The angle between the magnetic meridian and geographical meridian is called

•  Angle of dip
•  Angle of declination
•  Magnetic moment
•  Power of magnetic field

Angle of declination

Q6. The null points are on the axial line of a bar magnet, when it is placed such that its south pole points

•  South
•  East
•  North
•  West

North

Q7. At magnetic poles of earth, angle of dip is

•  Zero
•  45°
•  90°
•  180°

90°

Q8. The angle of dip at the magnetic equator is

•  0°
•  45°
•  30°
•  90°

Q9. At a place, if the earth's horizontal and vertical components of magnetic fields are equal, then the angle of dip will be

•  30°
•  90°
•  45°
•  0°

45°

Q10. The lines joining the places of the same horizontal intensity are known as

•  Isogonic lines
•  A clinic line
•  Isoclinic line
•  Isodynamic line

Isodynamic line

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