### Physics Class 11 - Chapter 5BRCircular MotionBRTest - 5 1.    Artificial gravity is a? a) Action force b) Active force c) Reaction force d) Orbital force 2.    Orbital velocity of a satellite is? a) None of these b) (MG/R)1/2 c) Both of these d) (gR)1/2 3.    Apparent weight may be? a) Zero b) Greater than real weight c) Equal to real weight d) All of these 4.    A body moving along a circular path completing two revolutions, if the radius of the circular path is the ratio of displacement to the covered path will be? a) 2piR b) pi R c) Zero d) 4piR 5.    A satellite whose position does not change w.r.t a certain pint on earth is called? a) Orbital satellite b) Spinning satellite c) None of these d) Constant satellite 6. When a wheel,1m in diameter makes 30rev/min.,the linear speed on its rim in ms-1is? a) 4pi b) 2pi c) pi/2 d) 3pi/3 7.    A body can have constant velocity when it follows a? a) Elliptical path b) Parabolic path c) Circular path d) Rectilinear path 8. The angular speed for daily rotation of earth in rads-1 is? a) 2pi b) pi c) 12pi d) 4pi 9.    In angular motion Newton’s second law of motion is? a) F=delta p/delta t b) F=ar c) None of these d) F=ma 10.    Weightlessness is observed only by observer? a) Inside the lift b) Outside the lift c) Wherever it is d) All of these
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