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