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Punjab 9th Class Physics Model Paper 4 MCQs Test Online

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Question 1 of 36

Physics

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

1.9 cm

2.1 cm

3.20 cm

4.3 cm

Question 1 of 36

Question 2 of 36

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

1.sin⁻¹

2.tan⁻¹

3.cos⁻¹

4.tan

Question 2 of 36

Question 3 of 36

3. A body is in equilibrium when is:

1.acceleration is zero

2.speed and acceleration are uniform

3.acceleration is uniform

4.speed is uniform

Question 3 of 36

Question 4 of 36

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

1.1

2.4

3.any number

4.2

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.meter rod

3.plum line

4. wedge

Question 5 of 36

Question 6 of 36

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

1.θ = tan⁻¹ Fy/Fx

2.θ = cos⁻¹Fy/Fx

3.θ = tan⁻¹ Fy/Fz

4.θ = sin⁻¹Fy/Fx

Question 6 of 36

Question 7 of 36

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

1.the point of intersection of medians

2.center of a plate

3.center of the cylinder

4.middle point on its axis

Question 7 of 36

Question 8 of 36

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

1.0

2.2F

3.F

4.1

Question 8 of 36

Question 9 of 36

9. The conditions of equilibrium are:

1.4

2.1

3.2

4.3

Question 9 of 36

Question 10 of 36

10. Center of gravity of a sphere is at:

1.outside of a sphere

2.none of these

3.center of a sphere

4.radius of a sphere

Question 10 of 36

Question 11 of 36

11. An example of neutral equilibrium is:

1.pencil at its tip

2.football

3.book on a table

4.block

Question 11 of 36

Question 12 of 36

12. States of equilibrium are:

1.3

2.4

3.1

4.2

Question 12 of 36

Question 13 of 36

13. Racing cars are made stable by:

1.decreasing their width

2.lowering their center of gravity

3.decreasing their mass

4.increasing their speed

Question 13 of 36

Question 14 of 36

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

1.7N

2.12N

3.10N

4.5N

Question 14 of 36

Question 15 of 36

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

1.10 N

2.Maximum

3.Zero

4.5 N

Question 15 of 36

Question 16 of 36

16. Sin 45° = cos 45° =

1.0.886

2.1.732

3.Undefined

4.0.707

Question 16 of 36

Question 17 of 36

17. tan 45° is equal to:

1.1.732

2.1

3.0.5

4.0.577

Question 17 of 36

Question 18 of 36

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

1.0.75

2.0.8

3.1

4.0.6

Question 18 of 36

Question 19 of 36

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

1.linear acceleration

2.angular acceleration

3.sum of forces

4.rotational force

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:

1.8.7 N

2.4 N

3.7 N

4.5 N

Question 20 of 36

Question 21 of 36

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

1.4

2.1

3.3

4.2

Question 21 of 36

Question 22 of 36

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

1.triangular sheet

2.circular ring

3.solid cylinder

4.rod

Question 22 of 36

Question 23 of 36

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

1.1

2.2

3.3

4.4

Question 23 of 36

Question 24 of 36

24. In SI, unit of torque is:

1.Nm⁻¹

2.Ns

3.Nm²

4.Nm

Question 24 of 36

Question 25 of 36

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

1.2

2.3

3.1

4.4

Question 25 of 36

Question 26 of 36

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

1.a torque

2.a couple

3.neutral equilibrium

4.equilibrium

Question 26 of 36

Question 27 of 36

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

1.keeps its height if displaced

2.is situated at its bottom

3.is at the lowest position

4.is at its highest position

Question 27 of 36

Question 28 of 36

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

1.point of intersection of medians

2.center of axis

3.point of intersection of diagonals

4.center

Question 28 of 36

Question 29 of 36

29. A pencil lying horizontally is the example of:

1.natural equilibrium

2.unstable equilibrium

3.stable equilibrium

4.equilibrium

Question 29 of 36

Question 30 of 36

30. First condition of equilibrium is:

1.Σt = 0

2.ΣF = 0

3.All of these

4.Σs = 3

Question 30 of 36

Question 31 of 36

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

1.solid cylinder

2.triangular

3.square

4.circular ring

Question 31 of 36

Question 32 of 36

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

1.moment arm

2.work

3.momentum

4.torque

Question 32 of 36

Question 33 of 36

33. cos θ is equal to:

1. (Perpendicular )/Base

2. (Base )/( Perpendicular)

3. (Base )/(Hypotenuse )

4. (Perpendicular )/(Hypotenuse )

Question 33 of 36

Question 34 of 36

34. Resultant force F is equal to:

1.F = Fx + Fy

2.F = √(Fx + Fy)

3.F = √(Fx² + Fy²)

4.F = Fx² + Fy²

Question 34 of 36

Question 35 of 36

35. A couple is formed by:

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

2.two forces perpendicular to each other

3.two equal and opposite forces in the same line

4.two like parallel forces

Question 35 of 36

Question 36 of 36

36. The turning effect of a force is called:

1.torque

2.pressure

3.work

4.momentum

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