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 Aerodynamics is a branch of: Hydrodynamics Thermodynamics Both of them Statics
2 The branch of physics which deals with the properties of fundamental particles is called: High energy physics Molecular physics Astrophysics Space physics
3 Particles have the mass smallest of following is: Electron Proton Neutron Quark
4 The mechanics, which deals with the objects moving with velocities approaching that of light is called: Relativistic mechanics Wave mechanic Quantum mechanics Statics
5 Astrophysics is a branch of physics, which deals with: Sub-atomic particles Stars and galaxies Light and sound Music
6 The information from far side of the universal are gathered by: Radio telescope Microscope Telescope Spectro scpe
7 Physics details with the study of: Matter Energy Both of them Human body
8 The time taken by light to travel from moon to earth is: 80 sec 500 sec 1.802 X 10<sup>4</sup>sec Aerophysics
9 The quantity have dimension of ML2T02will have SI unit of: Watt Newton Joule Metre
10 Which quantity has different dimensions: Work Pressure Energy Torque
11 Addition of 2.189 kg, 0.089 kg, 11.8 kg, and 5.32 kg gives the rounded off answer as: 19.398 19.400 19.4 19.3
12 Significant figures in 0.0010 are: Four Three Two One
13 Which one of the least multiple: Pico Femto Nano Atto
14 1 gm-cm-3is equal to: 10<sup>3</sup>kg-m<sup>-3</sup> 10<sup>-3</sup>kg-m<sup>-3</sup> 1 kg-m<sup>-3</sup> 10<sup>6</sup>kg-m<sup>-1</sup>
15 Light year is a unit of: Time Distance Velocity Intensity of light
16 A current of 1 ampere is passing through a conductor. The charge passing through it in half a minute s One coulomb 0.5 coulomb 30 coulombs 2 coulombs None of these
17 The conventional current is the name given to current due to flow of Positrons Positive charges Negative charges Both A and C None of these
18 In case of metallic conductors, the charge carriers are Protons Electrons Antiprotons Positrons Both A and B
19 The results of spectra obtained by Blamer were expressed in 1896 by Bohr Rydberg Planck Rutherford Coulomb
20 The range of wavelengths of colurs in the visible colours is 140 nm to 456 nm 10 nm to 56 nm 410 nm to 656 nm 910 nm to 956 nm None of these
21 Atoms of hydrogen gas can be excited by passing electric current through it when the gas is filled into the discharge tube at a pressure which is Less than atmospheric pressure Much less than atmospheric pressure Greater than atmospheric pressure Much greater than atmospheric pressure Both C and D
22 Field lines are closer to each other in the region where the filed is Stronger Weaker Much weaker Absent None of these
23 Electric field lines emerge from the charges in One dimension Two dimensions Three dimensions Four dimensions None of these
24 The value of relative permittivity of different dielectrics are Equal Different Greater than one Smaller than one Both B and C
25 By placing a dielectric in between the charges, the electrostatic force between them Is always reduced Is always increased Is not affected Is increased one million times None of these
26 Electric lines of force Intersect each other Are always parallel Are always anti-parallel Never intersect None of these
27 The electric field lines start from Positive charge Negative charge Either A or B Neutron An atom
28 The SI unit of charge is Ampere Watt Coulomb Volt Joule
29 The intensity at a point due to a charge is inversely proportional to Amount of charge Size of the charge Distance between charge and the point Square of the distance from the charge None of these
30 Electric intensity at a place due to a charged conductor is a Scalar quantity Vector quantity Semi vector and semi scalar Dimensionless quantity Both A and D are true
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