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Free Online Mock Physics Multiple Choice Test on Friction Force
Sub Category : Friction Force Test : 7 Time Left :
1)The vector sum of forces is perpendicular to their vector difference. In that case, the forces
(1) Are equal to each other in magnitude (2) Are not equal to each othe in magnitude (3) Cannot be predicted (4) Are equal to each other
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2) If in stationary lift a man is standing, with a bucket full of water having a hole at its bottom. The rate of flow of water through this hole is R0. If the lift starts to move up and down with same acceleration and rates of flow of water are Ru and Rd dash then(1) Ro greater than Ru greater than Rd (2) Ru greatert than Ro greater than Rd (3) Rd greater than Ro greater than Ru (4) Ru greater than Rd greater than Ro
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3) A rocket with a lift-off mass 3.5 x 10power4 kg is blasted upwards with an initial acceleration of 10 m/spower2. The initial thrust of the blast is(1) 1.75 x 10power5 N (2) 3.5 x 10power5 N (3) 7.0 x 10power5 N (4) 14.0 x 105power N
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4) A plumb line is suspended from a ceiling of a car moving with horizontal acceleration of a. What will be the angle of inclination with vertical?(1) tanpower-1 (a/g) (2) tanpower-1(g/a) (3) cospower-1 (a/g) (4) cospower-1 (g/a)
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5) Mass of a person sitting in a lift is 50 kg. If the lift is coming down with constant acceleration of 10 m/secpower2,the reading of spring balance will be (Take g = 10 mspower-2)(1) zero (2) 1000 N (3) 100 N (4) 10 N
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