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.

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Physics Chapter 4 Class 9 MCQs

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#1. When centre of gravity is at the highest position, body will be in:#2. The value of sin90 is:#3. The net torque acting on a rotating body with uniform speed is:#4. The formula of torque is:#5. The forces that are parallel to each other and have same direction are:

#6. A body is in equilibrium when its:#8. The symbol of sigma is:#10. The number of forces that can be added by head to tail rule are:

#11. The moment arm is represented by a sign:#12. A couple is formed by:#13. If force is 200N and legth of spanner is 0.15m then torque will be:#14. Second condition of equilibrium is:#15. According to second condition of equilibrium must be zero:

#16. Two equal but unlike parallel forces having different line of action produce:#17. A force of 10N is making an angle of 30° with the horizontal. Its horizontal component will be:#19. Turning effect of a force is:

#21. The centre of gravity of a sphere is:#23. The centre of gravityof an irregular shaped body can be found with the help of:#24. Racing cars are made stable by:#25. The direction of force with x-axis is given by:

#28. Complete equation Fy/Fx = ________#30. In a right triangle, length of base is 4 cm and perpendicular is 3cm. Its tanθ is equal to:

#31. The value of tan45° is ________.#32. The centre of gravity of a triangle is:#33. S.I. unit of torque is:#34. The centre of gravity of uniform ______ is the point of intersection of its diagonals.#35. The states of equilibrium are:

#36. First condition of equilibrium is:#37. A force of 10N is making an angle of 60° with x-axis then its horizontal component will be:#39. The direction of resultant vector can be found by:#40. If Fy=4N, Fx=3N, what is magnitude of resultant force?

#41. Number of factors on which torque depends:#42. The number of perpendicular components of a vector are:#43. A body is in neutral equilibrium when its centre of gravity:

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