### Physics Class 11 - Chapter 5Circular Motion Test - 1 1.    The angular velocity is measured in? a) Meter b) rev per min. c) Radian d) Steradian 2.    SI unit of angular displacement is? a) Radian b) Steradian c) Degree d) Meter 3.    Circular motion of a body may also be called? a) Linear motion b) Tangential motion c) Angular motion d) All of these 4.    The force required to bend a straight-line path of a body into the circular path is known as? a) Ballistic force b) Centripetal force c) None of these d) Centrifugal force 5.    For derivation of centripetal equation we assume that body? a) Constant b) In rest position c) All of these d) In motion 6.    All the points on a rigid body have same? a) Angular displacement b) Angular velocity c) Acceleration d) All of these 7.    For very small values of angular displacement it is treated as? a) Complex quantity b) Reference quantity c) Scaler quantity d) Vector quantity 8.    Centrifugal force is a? a) Variable force b) Constant force c) Action force d) Reaction force 9.    A body which maintains a constant distance between its two particles is called? a) Forced body b) None of these c) Rigid body d) Brittle body 10.    Direction of angular displacement can be found by? a) All of these b) Right hand rule c) Left hand rule d) Middle finger rule
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