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