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Free Online Mock Physics Multiple Choice Test on workenergy numericalbank
Sub Category : workenergy numericalbank Test : 1 Time Left :
1) A frame of mass 200g when suspended from a massless spring extends it by 10cm. A lump of clay of mass 200g is dropped from rest on to the frame from a height of 30 cm as shown in Fig. 33. As a result, the pan moves downward through a maximum distance of(1) 10 cm (2) 20 cm (3) 30 cm (4) 40 cm
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2) A running man has half the kinetic energy of that of a boy of half his mass. The man speeds up by 1 m s-1 and then has the same K.E. as that of boy. The original speeds of man and boy are, in m s-1(1) (square root 2 +1),(square root 2 -1) (2) (square root 2+1),2(square root 2 +1), (3) square root 2, square root 2 (4) (square root of 2 +1), 2(square root2-1)
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3) The displacement x of a particle of mass m moving in one dimension under the action of constant force is related to the time by the equation t = square root x+3 where x is in metre and t in second. What is the acceleration of the particle?(1) 1 m s-2 (2) 2 m s -2 (3) 3 m s-3 (4) 4 m s-2
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4) images/Gre-physics-workenergy-numerical-bank1-question274.png
The displacement x of a particle of mass m moving in one dimension under the action of constant force is related to the time by the equation : t = square root + 3 where x is in metre and t in second. What is the acceleration of the particle?The work done by the force in first 6 second is(1) 2m joule (2) 6m joule (3) 9m joule(4) 18 joule
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5) A human heart pumps 75cm3 of blood per beat.The blood pressure is 100 mm of mercury and beat frequency is 72 per minute. The density of mercury is 13.6 g cm-3. The power of the heart is [g =10 m -2] (1) 1.2 W (2) 12 W (3) 0.12W (4) 0.012W1
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