What is geomagnetic equator?

Important Questions on Magnetic Field and Earth's Magnetism

EASY

12th ICSE

IMPORTANT

NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 9 - Magnetic Field and Earth's Magnetism>QUESTIONS>Q 5

Name the parameters (magnetic elements) needed to completely specify earth's magnetic field at a point on earth's surface.

EASY

12th ICSE

IMPORTANT

NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 9 - Magnetic Field and Earth's Magnetism>QUESTIONS>Q 6

Two iron bars $\mathrm{A}$ and $\mathrm{B}$ are identical in appearance. One of these is definitely known to be magnetised (we do not know which one). How will you find whether the other one is magnetised or not? You are not to use anything other than the two bars.

MEDIUM

12th ICSE

IMPORTANT

NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 9 - Magnetic Field and Earth's Magnetism>QUESTIONS>Q 7

Of the two identical iron bars $\mathrm{A}$ and $\mathrm{B}$, one is magnetised and one is not. How will you ascertain which one is magnetised? You are not to use anything other than the two bars.

EASY

12th ICSE

IMPORTANT

NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 9 - Magnetic Field and Earth's Magnetism>QUESTIONS>Q 8

A magnetised needle in a uniform magnetic field experiences a torque but no net force. An iron nail near a bar-magnet, however, experiences a force of attraction in addition to a torque. Why?

EASY

12th ICSE

IMPORTANT

NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 9 - Magnetic Field and Earth's Magnetism>QUESTIONS>Q 9

The angle of dip at a place in South India is $18°$. Will it be more or less in England?

EASY

12th ICSE

IMPORTANT

NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 9 - Magnetic Field and Earth's Magnetism>QUESTIONS>Q 10

In which direction would a compass needle point to, if located right on the geomagnetic north or south pole?

MEDIUM

12th ICSE

IMPORTANT

NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 9 - Magnetic Field and Earth's Magnetism>QUESTIONS>Q 11

Cosmic rays are charged particles that strike our atmosphere from outer space. It is observed that north and south magnetic poles of earth receive more low-energy cosmic rays than the magnetic equator. Why?

EASY

12th ICSE

IMPORTANT

NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 9 - Magnetic Field and Earth's Magnetism>QUESTIONS>Q 12

Earth is a huge magnetic dipole. Is the magnetic pole in the Northern Hemisphere a north or a south magnetic pole?