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

A boy measures the length of a pencil and expresses it to be 2.6 cm. what is the accuracy of his measurement? Can he write it as 2.60 cm?

Differentiate between the scalar and vector quantities, giving two examples of each.

State whether the following quantity is a scalar or vector.

1. Pressure
2. Force
3. Momentum
4. Energy
5. Weight
6. Speed

When is a body said to be at rest?

Distinguish between average speed and average velocity.

'The value of g remains the same at all places on the Earth's surface'. Is this statement true? Give reason for your answer.

The vector quantity is :

18 km h^-1 is equal to _____________

The correct equation of motion is : ___________

Define the term thrust. State its S.I. unit.

What is meant by pressure? State its S.I. unit.

What physical quantity is measured in bar?

How is the unit bar related to the S.I. unit pascal?

State whether thrust is a scalar or vector?

State whether pressure is a scalar or vector?

Differentiate between thrust and pressure.

How does the pressure exerted by thrust depend on the area of surface on which it acts? Explain with a suitable example.

Why is the tip of an allpin made sharp?

Explain the following statement:
It is easier to cut with a sharp knife than with a blunt one.

Explain the following statement:
Sleepers are laid below the rails.