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MCAT Physics Mcq Questions Circular motion Set 1

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1. Rectangular coordinate system is also called




2. The direction of a vector in spece is specified by




3. Addition of vector obeys




4. A vector can be multiplied by a number. The number may be




5. Unit vector n^ is along




6. Cos?i^ + Sin?j^ is a




7. Maximum number of rectangular components are




8. Maximum number of components of a vector may be




9. Which one is not correct for a vector A= 2??2 i^ + ??2 j^?




10. The resultant of two forces of equal magnitudes is also equal to the magnitude of the forces. The angle between the two forces is




11. What is the angle that the given vector makes with y-axis? A=2 i^+??12 j^




12. In which quadrant the two rectangular components of a vector have same sign?




13. Two vectors A and B are making angle ? with each other. The scalar projection of vector B on vector A is written as




14. Two vectors are A = 3i^+2j^ -k^& B = 3i^-2j^ +k^ , then




15. If A=B, which of the following is not correct?




16. i^ . (j^ x k^) is equal to




17. Which one is not a correct relation?




18. The direction of vector product is given by




19. If east, west, north, south, up and down are representing the direction of unit vectors, then east x south has direction along




20. Null vector is a vector which has




21. Which one is a unit vector?




22. Angle between two vectors A and B can be determined by




23. The magnitude of cross product is equal to the dot product between them. The angle between the two vectors is




24. Torque is defined as




25. The dimension of torque is




26. SI unit of torque is




27. Torque acting on a body determines




28. A body in equilibrium




29. A body will be in complete equilibrium when it is satisfying




30. Which one is not a type of dynamic equilibrium?




31. Three coplanar forces acting on a body keep it in equilibrium. They should therefore be




32. which of the following pairs does not have identical dimensions ?




33. A central force is that which




34. It is easier to turn a steering wheel with both hands than with a single hand because




35. The cross product i^ x j^ is equal to




36. ? The unit vector in the direction of vector A = 2 i^ -2j^ + k^ is




37. The magnitude of i^. (j^ x k^) is




38. In which quadrant, only value of tan will be positive?




39. ? ? If A=Ax i^ + Ay j^ + Az K^ B = Bx i^ + By j^ + Bz K^ then




40. The cross product of two vectors is a negative vector when




41. The rotational K.E of hoop is equal to the




42. A hoop and disc have same mass and radius. Their rotational K.E are related by an equation




43. The critical speed of an artificial satellite is




44. Geo-stationary satellite completes one rotation around earth in




45. Radius of geo-stationary orbit from center of earth is nearly




46. According to Einstein the gravity interaction is possible between




47. One radian is equal to




48. The period of a circular motion is given by




49. The direction of linear velocity of body moving in a circle is




50. When a body moves in a circle, the angle between its linear velocity and angular velocity is always