Physics ECAT Pre Engineering MCQ's Test For Full Book With Answers

Physics ECAT Pre Engineering MCQ's Test For Full Book

Sr. # Questions Answers Choice
1 Slope of velocity-time graph represents: Acceleration Speed Torque Work
2 In the above figures, tell which set is graphs shows that a body is moving uniform velocity: (i) and (ii) (ii) and (iii) (i) and (iii) (ii) and (iv)
3 If the velocity time graph is a straight line parallel to time-axis, then it means that: The body is moving with uniform velocity The body is moving with uniform acceleration The body is at rest None of above
4 The magnitude of the force producing an acceleration of 10 m/sec2 in a body of mass 500 grams is: 3 N 4 N 5 N 6 N
5 A body is moving with constant velocity of 10 m/sec in the north east direction. Then its acceleration will be: 10 m/sec2 20 m/sec2 30 m/sec2 Zero
6 A body of mass 5 kg is acted upon by a total change n momentum will be: 10 NS 100 NS 140 NS 200 NS
7 When brakes are applied to a fast moving car, the passengers will be thrown: Forward Backward Downward None of these
8 Which one of the following is dimensionless. Acceleration Velocity Density Angle
9 The dimension of linear inertia is: MLT<sup>2</sup> ML<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°</span><span style="font-size: 10.5pt; line-height: 107%; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">T<sup>-2</sup></span> ML<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°T</span><span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°</span> MLT<sup>-1</sup>
10 A ball is dropped from a height of 4.2 meters. To what height will take it rise if there is no loss of KE after rebounding? 4.2 m 8.4 m 12.6 m none of these
11 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
12 The shortest distance between two points directed from its initial point to final point is called: Velocity Displacement Speed Distance
13 Ethanol (alcohol) as a type of: Electric fuel Bio fuel Nuclear fuel None of these
14 Root out of the conventional source of energy: Energy from biomass Hydroelectric energy Geothermal energy None of these
15 Biomass includes: Crop residue Natural vegetation Animal dung All of these
16 The consumption of energy by a 1000 watt heter in half an hour is: 5 Kwh 0.5 Kwh 2.5 Kwh 3.2 Kwh
17 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
18 The velocity given to a body to go out of the influence of earth's gravity is known as: Terminal velocity Orbital velocity Escape velocity None of these
19 When two protons are brought closer potential energy of both of them: Increases Decreases Remains same None of these
20 A body of weight 1 N has a kinetic energy of 1 joule when its speed is: 1.46 m sec<sup>-1</sup> 2.44 m sec<sup>-1</sup> 3.42 m sec<sup>-1</sup> 4.43 m sec<sup>-1</sup>
21 Tick the conservation force: Tension in a string Air resistance string Elastic spring force Frictional force
22 Work done along a closed path in a gravitational field is: Maximum Minimum Zero Unity
23 Relativistic mechanics is a branch of physics, which deal with the bodies moving with velocities: More then c Approaching c Equal to c Much less than x
24 The branch of physics, which deals with the structure an properties of solids is called: Plasma physics Solid state physics Any of above Astro physics
25 Density is defined as: Mass per volume Volume per mass Mass x volume Mass per length
26 High energy physics is branch of physics, which deals with: Stars and galaxies Sub-atomic particles Light and sound Molecules
27 In the equation E=mc2value of c is: 1,86,000 miles per hour 1,86,000 miles per sec 3 X 10<sup>8</sup>m/sec Both A and C Both B and C
28 From sand, we get a material used for construction of computer chips. That material is called: Germanium Silicon Copper Lead
29 The branch of physics which is mainly concerned with the motion of bodies under the action of forces is called: Optics Mechanics Thermodynamics Astro physics
30 Electron is a particle whose mass is: Greater than that of a proton Smaller than that of a proton Smaller than that of a proton or a neutron Greater than that of an atom
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