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 helpful materials for all types of students. Must share with your fellows if helpful.
Physics Chapter 4 Class 9 MCQs
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#1. A body is in neutral equilibrium when its centre of gravity:
#2. cosθ = _____.
#3. The number of perpendicular components of a vector are:
#4. In a right triangle, length of base is 4 cm and perpendicular is 3cm. Its tanθ is equal to:
#5. The centre of gravity of uniform ______ is the point of intersection of its diagonals.
#6. A force of 10N is making an angle of 30° with the horizontal. Its horizontal component will be:
#7. cos30° = _____.
#8. The formula of torque is:
#9. The centre of gravityof an irregular shaped body can be found with the help of:
#10. The net torque acting on a rotating body with uniform speed is:
#11. Torque depends on:
#12. The moment arm is represented by a sign:
#13. sin60° = _____.
#14. sin30° = _____.
#15. A couple is formed by:
#16. The symbol of sigma is:
#17. Two equal but unlike parallel forces having different line of action produce:
#18. A force of 10N is making an angle of 60° with x-axis then its horizontal component will be:
#19. The number of forces that can be added by head to tail rule are:
#20. The forces that are parallel to each other and have same direction are:
#21. cos60° = _____.
#22. cos90 = ______.
#23. Racing cars are made stable by:
#24. Turning effect of a force is:
#25. The centre of gravity of a triangle is:
#26. sinθ = _____.
#27. First condition of equilibrium is:
#28. The centre of gravity of a sphere is:
#29. When centre of gravity is at the highest position, body will be in:
#30. According to second condition of equilibrium must be zero:
#31. If Fy=4N, Fx=3N, what is magnitude of resultant force?
#32. The value of sin90 is:
#33. The states of equilibrium are:
#34. Second condition of equilibrium is:
#35. sin45° = _____.
#36. S.I. unit of torque is:
#37. Complete equation Fy/Fx = ________
#38. A body is in equilibrium when its:
#39. The direction of force with x-axis is given by:
#40. The direction of resultant vector can be found by:
#41. If force is 200N and legth of spanner is 0.15m then torque will be:
#42. The value of tan45° is ________.
#43. Number of factors on which torque depends:
9th Class All Book MCQs Physics
Chapter 1 – Physical Quantities and Measurements
Chapter 4 – Turning Effect of Forces
Chapter 7 – Properties of Matter
