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