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