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Free Online Mock Physics Multiple Choice Test on Rotational Motion
Sub Category : Rotational Motion Test : 19 Time Left :
1) A wheel is subjected to a uniform angular acceleration about its axis. Initially, its angular velocity is zero. In the first two second, it rotates an angle θ1. In the next two second, it through an additional angle θ2. The ratio θ2/θ1 is (1) 1 (2) 2 (3) 3 (4) 5
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2)Of the two given spheres of the same size, mass and appearance, one is hollow and the other is solid. The two spheres are simultaneously rolled down an inclined plane. Then, the
(1) hollow sphere will reach the bottom first (2) solid sphere will reach the bottom first (3) both will reach the bottom together (4) hollow sphere will reach the bottom just a little before the solid sphere
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3) A man of mass M is standing at the centre of a rotating turn-table, rotating with an angular velocity ω. The man holds two “dumb bells” of mass M/4 each in each of his two hands. If he stretches his arms to a horizontal position, the turn table acquires a new angular velocity we where(1) ω’=2ω (2) ω’=ω/2 (3) ω’>ω (4) ω’ less than ω
1 2 3 4
4) Two gear wheels which are meshed together have radii of 0.50 cm and 0.15 cm. Through how many revolutions does the smaller turn when the larger turns through 3 revolutions?
(1) 1 revolution (2) 3 revolution (3) 9 revolutions (4) 10 revolutions
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5) A particle of mass m = 5 is moving with a uniform speed v = 3√2 units in the XOY plane along the line y = x + 4. The magnitude of the angular momentum about origin is(1) zero (2) 60 units (3) 7.5 units (4) 40√2
1 2 3 4
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