Punjab 9th Class Physics Model Paper 3 MCQs Test Online

Question 1 of 36

Physics

1. 1 Newton is equal to:

1.1 kgm⁻¹s⁻¹

2.1 kgms

3.1 kgms⁻²

4.1 kg⁻¹ m⁻¹ s⁻¹

Question 1 of 36

Question 2 of 36

2. Two bodies of masses m₁ and m₂ attached to the ends of an in extensible string passing over a friction less pulley such that both move vertically. The acceleration of the bodies is:

1. (m₁ + m₂)/(m₁- m₂)g

2. (m₁ - m₂)/(m₁+ m₂)g

3.(m₁ X m₂)/(m₁+ m₂)g

4.(2m₁ m₂)/(m₁+ m₂)g

Question 2 of 36

Question 3 of 36

3. The mass of a body:

1.increases when accelerated

2.decreases when moving with high velocity

3.decreases when accelerated

4.opposite to the direction of motion

Question 3 of 36

Question 4 of 36

4. Rate of change of momentum is equal to:

1.force

2.torque

3.Distance

4.zero

Question 4 of 36

Question 5 of 36

5. Mathematically momentum is defined as:

1.P = (mv)²

2.P = mv²

3.P = v/m

4.P = mv

Question 5 of 36

Question 6 of 36

6. Which of the following material lowers friction when pushed between metal plates?

1.air

2.fine marble powder

3.water

4.oil

Question 6 of 36

Question 7 of 36

7. The product of a mass and a velocity of a body is called:

1.momentum

2.torque

3. work

4.force

Question 7 of 36

Question 8 of 36

8. Complete the equation: (Pf-Pi)/t = ?

1.T

2.F

3.m

4.S

Question 8 of 36

Question 9 of 36

9. Coefficient of friction between glass and glass is:

1.1.0

2.0.9

3.0.8

4.0.2

Question 9 of 36

Question 10 of 36

10. Co-efficient of friction between tyre and dry road is:

1. 0.2

2.0.05

3.1.0

4.0.6

Question 10 of 36

Question 11 of 36

11. Formula of momentum is:

1.P = mv

2.M = mv

3.M = mv²

4. P = mv⁻¹

Question 11 of 36

Question 12 of 36

12. According to the law of conservation of momentum:

1.V = M/mv

2.V = m/MV

3.V = M/mv

4.V = – m/M v

Question 12 of 36

Question 13 of 36

13. Which of the following relation is correct?

1.F = a/m

2.F = ma

3.F = m/a

4.F = m – a

Question 13 of 36

Question 14 of 36

14. The coefficient of friction between iron and iron is:

1. centrifugal force

2.gravitational force

3.frictional force

4. centripetal force

Question 14 of 36

Question 15 of 36

15. The unit of weight in System International is:

1.Kg

2.Dyne

3.Pound

4.Newton

Question 15 of 36

Question 16 of 36

16. Which force rotates the body in a circle?

1.centrifugal force

2.centripetal force

3. magnetic force

4.gravitational force

Question 16 of 36

Question 17 of 36

17. The value of “g” on Moon’s surface is:

1.1.6 ms⁻¹

2.1.6 kms⁻¹

3.1.6 ms⁻²

4.1.6 cms⁻²

Question 17 of 36

Question 18 of 36

18. The maximum value of friction is called:

1.normal reaction

2.limiting friction

3.cold welds

4.kinetic friction

Question 18 of 36

Question 19 of 36

19. Coefficient of friction μ_s between the tyre and road is:

1.0.8

2.0.6

3.0.2

4.1

Question 19 of 36

Question 20 of 36

20. A force produces an acceleration of 10 ms⁻² in a body of mass 5 kg. The value of force is:

1.20 N

2.2 N

3.50 N

4.30 N

Question 20 of 36

Question 21 of 36

21. The weight of a body is 147 N. Its mass will be: (when g = 10 ms⁻²)

1.0.147 kg

2.14.7 kg

3.147 kg

4.1.47 kg

Question 21 of 36

Question 22 of 36

22. The value of co-efficient of friction between ice and wood is:

1.0.29

2.1.0

3.0.05

4.0.2

Question 22 of 36

Question 23 of 36

23. Weight ‘W’ is equal to

1.w = m/g

2.w = g/m

3. 1/mg

4. w = mg

Question 23 of 36

Question 24 of 36

24. The value of coefficient of friction between steel and steel is:

1.0.8

2.0.05

3. 0.09

4. 0.9

Question 24 of 36

Question 25 of 36

25. A boy jumps out of a moving bus. There is a danger for him to all:

1.in the direction of motion

2.away from the bus

3.towards the moving bus

4.opposite to the direction of motion

Question 25 of 36

Question 26 of 36

26. Newton’s first law of motion is valid only in the absence of:

1.momentum

2.energy

3.force

4.friction

Question 26 of 36

Question 27 of 36

27. Inertia depends upon:

1.net force

2.mass

3.velocity

4.force

Question 27 of 36

Question 28 of 36

28. How much acceleration is produced by a force of 100 N in mass of 50 kg?

1.0.5 ms⁻²

2.2 ms⁻²

3.0.05 ms⁻²

4.20 ms⁻²

Question 28 of 36

Question 29 of 36

29. Coefficient of friction is equal to:

1.Fs/R

2.R/Fs

3.Fs + R

4. FsR

Question 29 of 36

Question 30 of 36

30. A string is stretched by two equal and opposite forces of 10 N each. The tension in the string is:

1.5N

2.10N

3.zero

4.20 N

Question 30 of 36

Question 31 of 36

31. Newton’s first Law of motion is valid only in the absence of:

1.momentum

2.friction

3.net force

4.force

Question 31 of 36

Question 32 of 36

32. A mass of 6kg is moving with acceleration 2ms⁻², Force acting on it is:

1.4 N

2.12 N

3.8 N

4.3 N

Question 32 of 36

Question 33 of 36

33. The SI unit of momentum is:

1.Ns

2.Ns⁻¹

3.kgms⁻²

4.Nm

Question 33 of 36

Question 34 of 36

34. Sliding friction can be converted into rolling friction by using:

1.pulleys

2.levers

3.ball bearings

4.wedges

Question 34 of 36

Question 35 of 36

35. When a horse pulls a cart, the action is on the:

1.earth and cart

2.horse

3.earth

4.cart

Question 35 of 36

Question 36 of 36

36. The force which keeps a body to move in a circle is called:

1.centrifugal force

2.rotational force

3.gravitational force

4.centripetal force

Question 36 of 36

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