ECAT Physics Online Test With Answers

ECAT Physics Online Test

Sr. # Questions Answers Choice
1 N s m-2is unit of: Drag force Pressure Surface tension Coefficient of viscosity
2 Machine parts are jammed due to: Increasing in viscosity of lubricant Decreasing in viscosity of lubricant Decreasing in surface tension of lubricant None of these
3 The body passing a viscous medium affected by: One force only Two forces only Four forces None of these
4 The resistance offered by a fluid to a solid moving inside it is called: Drag force Surface force Viscosity None of these
5 The property of fluids due to which they resist their own flow is called: Drag force Surface tension Viscosity None of these
6 One newton is a force that produces an acceleration of 0.5 m/sec2in a body of mass: 2 Kg 3 Kg 4 Kg 8 Kg
7 Force is a: Scalar quantity Base quantity Derived quantity None of these
8 An object is dropped from a height of 100 m. Its velocity at the moment it touches the ground is: 100 m/sec 140 m/sec 1960 m/sec 196 m/sec
9 Body which falls freely under gravity provides good example of motion under: Uniform acceleration Non-uniform acceleration Uniform velocity None of these
10 Swimming becomes possible because of______law of motion. First Second Third None of these
11 A dirty carpet is to be cleaned by heating. This is in according with______law of motion. First Second Third None of these
12 A certain force gives an acceleration of 2 m/sec2to a body mass 5 kg. The same force would give a 20 kg object an acceleration of: 0.5 m/sec<sup>2</sup> 5 m/sec<sup>2</sup> 1.5 m/sec<sup>2</sup> 9.8 m/sec<sup>2</sup>
13 Slope of velocity time graph represents: Acceleration Speed Torque Work
14 In above figures, tell which set of graphs shows that a body is moving with uniform velocity: (i) and (ii) (ii) and (iii) (iii) and (iv)
15 If the velocity time graph is a straight line parallel to the time-axis, then it means: The body is moving with uniform velocity The body is moving with uniform acceleration The body is at rest None of these
16 The magnitude of the force producing an acceleration of 10 m/sec2in a body of mass 500 grams is: 3 N 4 N 5 N 6 N
17 The magnitude of the force producing an acceleration of 10 m/sec2in a body of mass 500 grams is: 3 N 4 N 5 N 6 N
18 A body is moving with constant velocity of 10 m/sec in the north-east direction. Then its acceleration will be: 10 m/sec<sup>2</sup> 20 m/sec<sup>2</sup> 30 m/sec<sup>2</sup> Zero
19 A body of mass 5 kg is acted upon by a constant force of 20 n for 7 seconds. The total change in momentum will be: 10 NS 100 NS 140 NS 200 NS
20 When brakes are applied to a fast moving car, the passenger will be thrown: Forward Backward Downward none of these
21 Which one of the following is dimensionless: Acceleration Velocity Density Angle
22 The dimension of linear inertia is: MLT<sup>2</sup> ML<sup>0</sup>T<sup>-2</sup> ML<sup>0</sup>T<sup>0</sup> MLT<sup>-1</sup>
23 A ball is dropped from a height of 4.2 meters. To what height it will rise if there is no loss of KE after rebounding? 4.2 m 8.4 12.6 None of these
24 A body moving with an acceleration of 5 m/sec2started with velocity of 10 m/sec. What will be the distance traversed in 10 seconds? 150 m 250 m 350 m 400 m
25 The short distance between two points direction from its initial point to final point is called: Velocity Displacement Speed Distance
26 Ethanol (alcohol) is a type of: Electric fuel Bio fuel Nuclear fuel None of these
27 Root out the conventional source of energy: Energy from blomass hydroelectric energy Geothermal energy None of these
28 Blomass includes: Crop residue Natural vegetation Animal dung All of these
29 The consumption source if energy is: Energy from blomass Hydroelectric energy Geothermal energy None of these
30 One KWh is equal to: 3.6 x 10<sup>2</sup>J 3.6 KJ 3,6 x 10<sup>1</sup>KJ 3,6 MJ
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