Al-Huda Science Academy has designed Physics Chapter 4 Class 9 MCQs for board preparation. Most of the questions are from the previous board papers. These are helping material for all type of students. Must share to your fellows if helpful.

Time allocated to each question is 30 seconds.

Physics Chapter 4 Class 9 MCQs

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#1. First condition of equilibrium is:

#2. The symbol of sigma is:

#3. Number of factors on which torque depends:

#4. sin45° = _____.

#5. The centre of gravity of a triangle is:

#6. sinθ = _____.

#7. When centre of gravity is at the highest position, body will be in:

#8. A body is in equilibrium when its:

#9. The formula of torque is:

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

#11. The direction of resultant vector can be found by:

#12. Second condition of equilibrium is:

#13. sin30° = _____.

#14. The net torque acting on a rotating body with uniform speed is:

#15. The direction of force with x-axis is given by:

#16. Torque depends on:

#17. A body is in neutral equilibrium when its centre of gravity:

#18. If Fy=4N, Fx=3N, what is magnitude of resultant force?

#19. The value of tan45° is ________.

#20. A force of 10N is making an angle of 60° with x-axis then its horizontal component will be:

#21. cos90 = ______.

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

#23. cos30° = _____.

#24. The centre of gravityof an irregular shaped body can be found with the help of:

#25. The moment arm is represented by a sign:

#26. A couple is formed by:

#27. In a right triangle, length of base is 4 cm and perpendicular is 3cm. Its tanθ is equal to:

#28. S.I. unit of torque is:

#29. If force is 200N and legth of spanner is 0.15m then torque will be:

#30. cosθ = _____.

#31. cos60° = _____.

#32. The number of forces that can be added by head to tail rule are:

#33. The number of perpendicular components of a vector are:

#34. Turning effect of a force is:

#35. The forces that are parallel to each other and have same direction are:

#36. The centre of gravity of a sphere is:

#37. The centre of gravity of uniform ______ is the point of intersection of its diagonals.

#38. According to second condition of equilibrium must be zero:

#39. The value of sin90 is:

#40. sin60° = _____.

#41. Racing cars are made stable by:

#42. Complete equation Fy/Fx = ________

#43. The states of equilibrium are:

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