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Punjab (PTB) · Half book test (board pattern) · Free

9th Class Physics First half Book Paper

60 marks · Objective 15 minutes, subjective 1 hour 45 minutes · 39 questions. Covers: 5 chapters (CHAP 1: Physical Quantities and Measurements to CHAP 5: Work, Energy and Power).

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9th Class Physics First half Book Paper

9th Class · Physics · Punjab (PTB)

Name: ____________Roll No: ________Class/Section: ________Date: ________Total marks: 60Time: Objective 15 minutes, subjective 1 hour 45 minutes

Q1. Multiple choice questions (Attempt all · 12 × 1 = 12)

  1. A spanner 25 cm long is used to open a nut. If a force of 400 N is applied at the end of a spanner what is the torque acting on the nut:

    1. 98 Nm

    2. 100 Nm

    3. 150 Nm

    4. 1600 Nm

  2. Which of the following is a contact force?

    1. Gravitational force

    2. Magnetic force

    3. Normal force

    4. Electrostatic force

  3. Resources of energy which are replaced by new ones after their use are called:

    1. Non-renewable energy

    2. Renewable energy sources

    3. Natural energy sources

    4. Fossil fuels

  4. Least count of micrometer screw gauge:

    1. 1 mm

    2. 0.01 mm

    3. 0.1 mm

    4. None

  5. A girl walks 3 km towards west and 4 km towards south. What is the magnitude of her total distance and displacement respectively?

    1. 7 km, 7 km

    2. 1km, 7 km

    3. 7km, 1km

    4. 7km, 5km

  6. The mathematical form of the second condition of equilibrium is:

  7. Sir Isaac Newton was born in Lincolnshire on:

    1. April 4, 1643

    2. March 4, 1643

    3. February 4, 1643

    4. January 4, 1643

  8. A body of mass 2 kg is placed on the table 100 cm high, the value of its kinetic energy is:

    1. 50 joule

    2. 40 joule

    3. 400 joule

    4. zero joule

  9. The least count of digital Vernier Callipers is:

    1. 0.1 mm

    2. 0.01 mm

    3. 0.001 mm

    4. 0.0001 mm

  10. If an object is moving with constant speed than its distance time graph will be a straight line:

    1. Along time-axis

    2. Parallel to time-axis

    3. Along distance-axis

    4. Inclined to time-axis

  11. A body is in stable equilibrium when its centre of gravity:

    1. Is at its heightest position

    2. Is situated at its bottom

    3. Is at lowest position

    4. Keeps its height if displaced

  12. According to the law of conservation of momentum.

Q2. Short questions (Attempt any 5 of 8 · 5 × 2 = 10)

  1. Solve the following:

  2. What does the gradient of a distance-time graph represent?

  3. Define systematic error?

  4. Define kinematics.

  5. Differentiate between physical and non-physical quantities?

  6. Speed of a car is 72kmh-1 Convert this speed in ms-1.

  7. Which SI unit will you use to express the height of your desk?

  8. Is it possible for a body to have acceleration? When moving with: (i) Constant velocity (ii) Constant speed.

Q3. Short questions (Attempt any 5 of 8 · 5 × 2 = 10)

  1. What is resolution of force?

  2. Define momentum. Write its unit.

  3. Define momentum of a force. Prove that, where is angle between r and F.

  4. Inflatable air bags are installed in the vehicles as safety equipment. In terms of momentum, what is the advantage of air bags over seat belts? 

  5. A ripe mango does not normally fall from the tree. But when the branch of the tree is shaken, the mango falls down easily. Can you tell the reason?

  6. Write an advantage of electronic balance over mechanical balance.

  7. Why now-a-days, steering wheels of smaller diameter are installed vehicles?

  8. What is elastic force? Give its examples.

Q4. Short questions (Attempt any 5 of 8 · 5 × 2 = 10)

  1. Define sewage

  2. A car is moving along a curved road at constant speed. Does its kinetic energy change?

  3. What are fossil fuel?

  4. What is power and also write efficiency of diesel engine?

  5. While driving on a motorway, tyre of a vehicle sometimes bursts. What may be its cause?

  6. What were the effects of the 1986 Chernobyl nuclear accident?

  7. Find the work done by 65 N force in pulling the suitcase for a distance of 20 meter.

  8. Define SI Unit of power.

Q5. Long questions (Attempt any 2 of 3 · 2 × 9 = 18)

  1. A truck of mass 3000 kg is moving on a road with uniform velocity of 54 kmh-¹. Determine its kinetic energy.

  2. Explain the term rolling friction briefly.

  3. (i)Define acceleration. Write its formula and Sl unit.(ii) Explain average acceleration.(iii) Define uniform and non-uniform acceleration.