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

Define the agonic line.

Define the isoclinic line.

How do you account for the following fact?

Soft iron keepers help to prevent the magnets from losing their magnetic properties.

State briefly the molecular theory of magnetism.

State briefly the modern views on magnetism.

Repulsion is a surer test of magnetic condition of a body than attraction. Explain.

Describe two methods of determining the arrangement of the lines of force in the field close to a bar magnet. Give a brief explanation of each method.

Draw diagram showing the arrangement of the lines of force for a single magnet.

Draw diagram showing the arrangement of the lines of force for two magnets in line, with unlike poles facing one another.

Draw diagram showing the arrangement of the lines of force for a piece of soft iron laid in line with the magnetic field.

State any two properties of a magnet.

Define Distance.

Define Displacement.

Give two differences between displacement and distance.

Give an example of a body which covers a certain distance, but its displacement is zero.

Copy the following table and fill in the blank spaces.

A car covers 90 km in `1 1/2` hours towards east. Calculate

1. displacement of car,
2. its velocity in (a) kmh⁻¹ (b) ms⁻¹.

A racehorse runs straight towards the north and covers 540 m in one minute. Calculate

1. displacement of the horse,
2. its velocity in (a) ms⁻¹ (b) kmh⁻¹.

Draw displacement – time graph for the following situation:

When a body is moving with uniform velocity.

Draw displacement – time graph for the following situation:

When a body is moving with variable velocity.