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Punjab 9th Class Physics Model Paper 4 MCQs Test Online

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Question 1 of 36

Physics

1. tan 45° is equal to:

1.0.577

2.1.732

3.0.5

4.1

Question 1 of 36

Question 2 of 36

2. cos θ is equal to:

1. (Perpendicular )/(Hypotenuse )

2. (Base )/(Hypotenuse )

3. (Base )/( Perpendicular)

4. (Perpendicular )/Base

Question 2 of 36

Question 3 of 36

3. First condition of equilibrium is:

1.Σt = 0

2.ΣF = 0

3.All of these

4.Σs = 3

Question 3 of 36

Question 4 of 36

4. The turning effect of a force is called:

1.torque

2.momentum

3.pressure

4.work

Question 4 of 36

Question 5 of 36

5. A pencil lying horizontally is the example of:

1.unstable equilibrium

2.natural equilibrium

3.stable equilibrium

4.equilibrium

Question 5 of 36

Question 6 of 36

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

1.1

2.4

3.2

4.any number

Question 6 of 36

Question 7 of 36

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

1.linear acceleration

2.angular acceleration

3.rotational force

4.sum of forces

Question 7 of 36

Question 8 of 36

8. A body is in equilibrium when is:

1.acceleration is zero

2.speed is uniform

3.speed and acceleration are uniform

4.acceleration is uniform

Question 8 of 36

Question 9 of 36

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

1.2

2.4

3.1

4.3

Question 9 of 36

Question 10 of 36

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

1.meter rod

2.plum line

3.screw gauge

4. wedge

Question 10 of 36

Question 11 of 36

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

1.solid cylinder

2.triangular

3.circular ring

4.square

Question 11 of 36

Question 12 of 36

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

1.a couple

2.neutral equilibrium

3.equilibrium

4.a torque

Question 12 of 36

Question 13 of 36

13. States of equilibrium are:

1.1

2.4

3.2

4.3

Question 13 of 36

Question 14 of 36

14. Resultant force F is equal to:

1.F = Fx² + Fy²

2.F = √(Fx² + Fy²)

3.F = Fx + Fy

4.F = √(Fx + Fy)

Question 14 of 36

Question 15 of 36

15. Center of gravity of a sphere is at:

1.none of these

2.radius of a sphere

3.outside of a sphere

4.center of a sphere

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:

1.10 N

2.5 N

3.Maximum

4.Zero

Question 16 of 36

Question 17 of 36

17. In SI, unit of torque is:

1.Nm²

2.Nm⁻¹

3.Nm

4.Ns

Question 17 of 36

Question 18 of 36

18. A couple is formed by:

1.two forces perpendicular to each other

2.two equal and opposite forces in the same line

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

4.two like parallel forces

Question 18 of 36

Question 19 of 36

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

1.2F

2.1

3.F

4.0

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:

1.7 N

2.5 N

3.4 N

4.8.7 N

Question 20 of 36

Question 21 of 36

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

1.θ = sin⁻¹Fy/Fx

2.θ = tan⁻¹ Fy/Fz

3.θ = cos⁻¹Fy/Fx

4.θ = tan⁻¹ Fy/Fx

Question 21 of 36

Question 22 of 36

22. The conditions of equilibrium are:

1.1

2.3

3.4

4.2

Question 22 of 36

Question 23 of 36

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

1.moment arm

2.work

3.torque

4.momentum

Question 23 of 36

Question 24 of 36

24. Sin 45° = cos 45° =

1.1.732

2.Undefined

3.0.707

4.0.886

Question 24 of 36

Question 25 of 36

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

1.is at its highest position

2.is at the lowest position

3.keeps its height if displaced

4.is situated at its bottom

Question 25 of 36

Question 26 of 36

26. 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

2.1

3.0.8

4.0.6

Question 26 of 36

Question 27 of 36

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

1.point of intersection of medians

2.center

3.center of axis

4.point of intersection of diagonals

Question 27 of 36

Question 28 of 36

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

1.circular ring

2.solid cylinder

3.triangular sheet

4.rod

Question 28 of 36

Question 29 of 36

29. 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

2.20 cm

3.9 cm

4.1 cm

Question 29 of 36

Question 30 of 36

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

1.center of a plate

2.center of the cylinder

3.middle point on its axis

4.the point of intersection of medians

Question 30 of 36

Question 31 of 36

31. An example of neutral equilibrium is:

1.football

2.block

3.pencil at its tip

4.book on a table

Question 31 of 36

Question 32 of 36

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

1.1

2.2

3.4

4.3

Question 32 of 36

Question 33 of 36

33. Racing cars are made stable by:

1.increasing their speed

2.lowering their center of gravity

3.decreasing their mass

4.decreasing their width

Question 33 of 36

Question 34 of 36

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

1.5N

2.12N

3.7N

4.10N

Question 34 of 36

Question 35 of 36

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

1.tan⁻¹

2.sin⁻¹

3.cos⁻¹

4.tan

Question 35 of 36

Question 36 of 36

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

1.4

2.2

3.1

4.3

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