(English Medium) ICSE Class 9 - CISCE Question Bank Solutions

The figure shows a freely suspended magnet in the rest position. Copy the diagram and on its show:

1. Angle of declination
2. Angle in dip

Since every iron atom is a tiny magnet, why are not all iron bar magnets?

 If a magnet is carefully broken into two pieces as shown in figure (i), how does the magnetic strength of each piece compare with that of the original magnet? If another magnet is carefully broken in half along its long axis shown in figure (ii), how would the strength of each piece compare with that of the original magnet?

Draw the magnetic flux pattern near a bar magnet placed with its axis in the magnetic meridian and the south pole pointing towards geographic north.

Draw a clearly labelled diagram, to show how a steel bar is magnetised by a divided touch method. A written description is not required.

What do you understand by the term rest? Support your answer by giving two examples

What do you understand by the term motion? Support your answer by giving two examples

What are magnetic keepers? What are they used for?

By giving an example, prove that rest and motion are relative terms.

Define Scalar quantities.

Define Vector quantities.

What do you understand by the term magnetic declination?

Explain the mechanism by which unmagnetized iron nails get attracted to a magnet when brought near it.

Pick out the scalar and vector quantities from the following list:

1. mass
2. density
3. displacement
4. distance
5. momentum
6. acceleration
7. temperature
8. time

Give two differences between speed and velocity.

State whether the following is scalar or vector quantity.

Speed

State whether the following is scalar or vector quantity

Force

State whether the following is scalar or vector quantity

Acceleration

State whether the following is scalar or vector quantity

Energy

Copy the following table and fill in the blank spaces.