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Punjab (PTB) · Chapter test · Free

9th Class Physics Chapter 6 TestMechanical Properties of Matter

30 marks · 40 minutes · 21 questions. Covers: CHAP 6: Mechanical Properties of Matter.

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9th Class Physics Chapter 6 Test

9th Class · Physics · Punjab (PTB)

Name: ____________Roll No: ________Class/Section: ________Date: ________Total marks: 30Time: 40 minutes

Q1. Multiple choice questions (Attempt all · 10 × 1 = 10)

  1. What is the pressure of Sun's center?

  2. The pressure exerted by a man on the surface of earth will be smaller when he:

    1. Stands on both feet

    2. Sits on the ground

    3. Stands on one leg

    4. Sleeps on the ground

  3. The materials are elastic up to a certain limit known as:

    1. Deforming force

    2. Extension

    3. Elastic limit

    4. None of these

  4. The mass can be easily measured by:

    1. Spring balance

    2. Physical balance

    3. Both A and B

    4. None of these

  5. The mass of 200 cm3 of stone is 500 g.Its density will be:

  6. The upthrust of liquid is given by:

    1. gn

    2. pgv

    3. pgh

    4. pgF

  7. A tiny spring use in galvanometer is called:

    1. Helical spring

    2. Spiral spring

    3. Balancing spring

    4. Hair spring

  8. Atmospheric pressure extends up to height of about:

    1. 100 km

    2. 1000 km

    3. 500 km

    4. None of these

  9. A girl of mass 50 kg wears heel with an area of 2 cm2 in contact with the ground. The pressure she exerts on ground is:

    1. 4 x 10-5 Pa

    2. 245 x 104 Pa

    3. 4 x 10-4 Pa

    4. 4 x 105 Pa

  10. If reduce the area in contact between your feet and the ground, then pressure will be:

    1. Remain same

    2. Decreases

    3. Increases

    4. Becomes double

Q2. Short questions (Attempt any 6 of 8 · 6 × 2 = 12)

  1. Why is the cutting edge of the knife made very thin?

  2. Why sports boots have studs on their soles? Explain.

  3. Describe the measurement of pressure by manometer?

  4. Why Matter is found in different states?

  5. Define force multiplier?

  6. What is barometer?

  7. If you climbed a mountain carrying a mercury barometer, would the level of the mercury column in the glass tube of the barometer increase or decrease as you climb the mountain? Explain.

  8. Write the typical pressure of sun's center and earth's center?

Q3. Long questions (Attempt any 2 of 3 · 2 × 4 = 8)

  1. What will be the height of the column in barometer at sea level if mercury is replaced by water of density 1000 kg m-3, where density of mercury is 13.6 x 103 kg m-3.

  2. Use of Hydraulic Press.  

  3. Explain that atmosphere exerts pressure. What are its applications. Give at least three examples.