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Free Online Mock Physics Multiple Choice Test on Laws motion
Sub Category : Laws motion Test : 20 Time Left :
1) The accelerations of a particle as seen from two reference frames Spower1 and S power2 come out equal in magnitude, 4 ms power-2. The acceptable possibilities are that(1) S1 and S2 may be at rest relative to one another (2) S1 may be moving with uniform velocity relative to S2 (3) S1 may have an acceleration 8 m/spower2 relative to S2 (4) S1 may have an acceleration 4 m/s power2 relative to S2
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2) A long plank P of mass 5 kg is placed on a smooth floor. On p placed a block Q of mass 2kg. The coefficient of friction between P and Q is 0.5.A horizontal force of 15 N is applied to Q, as shown in fig.195, and you may take g as 10 N |kg. Now(1)the reaction force in Q due to P is 10 N (2) the acceleration of Q relative to P is 2.5 m/s power2 (3) the acceleration of P relative to the floor is 2.0 m/s power2 (4) the acceleration of centre – of – mass of P + Q system relative to the floor is 15/7 m/s power2
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3) Which of the following is correct (1) Maximum value of force of friction is called limiting friction (2) When one newton force acts on 1 kg body which is able to move freely it gets an acceleration of 1 m s-2 (3) Both (1) and (2) (4) None of these
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4) A particle has initial velocity finite. A force of constant magnitude is now applied to it. Depending on the orientation of the force,the particle may
(1) pass through the starting point at some later time (2) describe a circular path (3) describe a parabolic path (4) never return to the staring point
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5) A block of weight 9.8 N (g = 9.8 m spower-2) is placed on a table. The table surface exerts an upward force of 10 N on the block. Now (1) The block exerts a force of 10 N on the table (2) The block exerts a force of 19.8 N on the table (3) The block exerts a force of 9.8 N on the table (4) The block has an upward acceleration
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