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Punjab 9th Class Physics Model Paper 4 MCQs Test Online

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Question 1 of 36

Physics

1. The turning effect of a force is called:

1.pressure

2.momentum

3.work

4.torque

Question 1 of 36

Question 2 of 36

2. According to 2^nd condition of equilibrium is:

1.angular acceleration

2.sum of forces

3.rotational force

4.linear acceleration

Question 2 of 36

Question 3 of 36

3. In SI, unit of torque is:

1.Nm²

2.Nm

3.Ns

4.Nm⁻¹

Question 3 of 36

Question 4 of 36

4. A body is neutral equilibrium when its center of gravity:

1.is situated at its bottom

2.is at the lowest position

3.is at its highest position

4.keeps its height if displaced

Question 4 of 36

Question 5 of 36

5. The center of gravity of an irregular shaped body can be found with the help of a:

1.screw gauge

2. wedge

3.plum line

4.meter rod

Question 5 of 36

Question 6 of 36

6. The number of perpendicular components of a force are:

1.3

2.2

3.1

4.4

Question 6 of 36

Question 7 of 36

7. First condition of equilibrium is:

1.Σt = 0

2.ΣF = 0

3.All of these

4.Σs = 3

Question 7 of 36

Question 8 of 36

8. The perpendicular distance between the axis of rotation and the line of action of force is called:

1.torque

2.moment arm

3.work

4.momentum

Question 8 of 36

Question 9 of 36

9. The center of gravity of a uniform solid cylinder is at:

1.center of a plate

2.center of the cylinder

3.the point of intersection of medians

4.middle point on its axis

Question 9 of 36

Question 10 of 36

10. The center of gravity of a uniform __________ sheet is the point of intersection of its diagonals.

1.circular ring

2.solid cylinder

3.square

4.triangular

Question 10 of 36

Question 11 of 36

11. Complete the equation: θ = __________ Fy/Fx.

1.tan

2.cos⁻¹

3.sin⁻¹

4.tan⁻¹

Question 11 of 36

Question 12 of 36

12. The number of perpendicular components of a vector are:

1.4

2.2

3.1

4.3

Question 12 of 36

Question 13 of 36

13. Center of gravity of a sphere is at:

1.outside of a sphere

2.radius of a sphere

3.none of these

4.center of a sphere

Question 13 of 36

Question 14 of 36

14. An example of neutral equilibrium is:

1.pencil at its tip

2.football

3.block

4.book on a table

Question 14 of 36

Question 15 of 36

15. Formula for the direction of resultant force with the help of rectangular components is:

1.θ = cos⁻¹Fy/Fx

2.θ = tan⁻¹ Fy/Fz

3.θ = tan⁻¹ Fy/Fx

4.θ = sin⁻¹Fy/Fx

Question 15 of 36

Question 16 of 36

16. A force of 10 N makes an angle of 90° with x-axis. Its horizontal component is:

1.Maximum

2.10 N

3.5 N

4.Zero

Question 16 of 36

Question 17 of 36

17. Racing cars are made stable by:

1.increasing their speed

2.decreasing their width

3.decreasing their mass

4.lowering their center of gravity

Question 17 of 36

Question 18 of 36

18. Resultant force F is equal to:

1.F = Fx + Fy

2.F = √(Fx² + Fy²)

3.F = Fx² + Fy²

4.F = √(Fx + Fy)

Question 18 of 36

Question 19 of 36

19. Sin 45° = cos 45° =

1.0.886

2.Undefined

3.1.732

4.0.707

Question 19 of 36

Question 20 of 36

20. A force of 10 N is making an angle of 30° with the horizontal. Its horizontal component will be:

1.5 N

2.4 N

3.8.7 N

4.7 N

Question 20 of 36

Question 21 of 36

21. In a right angled triangle, length of a base is 4cm and its hypotenuse is 5cm. The length of a perpendicular is:

1.3 cm

2.9 cm

3.1 cm

4.20 cm

Question 21 of 36

Question 22 of 36

22. cos θ is equal to:

1. (Base )/(Hypotenuse )

2. (Base )/( Perpendicular)

3. (Perpendicular )/(Hypotenuse )

4. (Perpendicular )/Base

Question 22 of 36

Question 23 of 36

23. The number if vectors that can be added by head to tail rule is:

1.2

2.4

3.any number

4.1

Question 23 of 36

Question 24 of 36

24. The number of perpendicular components of a vector are:

1.3

2.2

3.1

4.4

Question 24 of 36

Question 25 of 36

25. A force ‘F’ acting along x-axis, Its y components is:

1.F

2.0

3.2F

4.1

Question 25 of 36

Question 26 of 36

26. If F_y = 4N and F_x = 3N, what is the magnitude of a resultant force?

1.5N

2.12N

3.10N

4.7N

Question 26 of 36

Question 27 of 36

27. States of equilibrium are:

1.1

2.3

3.2

4.4

Question 27 of 36

Question 28 of 36

28. In a tight angled triangle, length of a base is 4 cm and perpendicular is 3 cm. Then its tan θ is equal to:

1.0.8

2.0.6

3.1

4.0.75

Question 28 of 36

Question 29 of 36

29. tan 45° is equal to:

1.0.5

2.1

3.0.577

4.1.732

Question 29 of 36

Question 30 of 36

30. A couple is formed by:

1.two equal and opposite forces in the same line

2.two like parallel forces

3.two equal and opposite forces not is the same line

4.two forces perpendicular to each other

Question 30 of 36

Question 31 of 36

31. A pencil lying horizontally is the example of:

1.stable equilibrium

2.unstable equilibrium

3.equilibrium

4.natural equilibrium

Question 31 of 36

Question 32 of 36

32. The conditions of equilibrium are:

1.4

2.1

3.2

4.3

Question 32 of 36

Question 33 of 36

33. Two equal but unlike parallel forces having different line of action produce:

1.a couple

2.equilibrium

3.a torque

4.neutral equilibrium

Question 33 of 36

Question 34 of 36

34. The center of gravity of a triangle is at:

1.center

2.point of intersection of diagonals

3.center of axis

4.point of intersection of medians

Question 34 of 36

Question 35 of 36

35. A body is in equilibrium when is:

1.acceleration is uniform

2.speed and acceleration are uniform

3.speed is uniform

4.acceleration is zero

Question 35 of 36

Question 36 of 36

36. Point of intersection of medians is the center of gravity if a uniform:

1.triangular sheet

2.solid cylinder

3.circular ring

4.rod

Question 36 of 36

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Test By Topics	9th Class Physics

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Punjab 9th Class Physics Model Paper 4 MCQs Test Online

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Punjab 9th Class Physics Model Paper 4 MCQs Test Online