ECAT Pre General Science Physics Chapter 1 Measurements Online Test With Answers

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ECAT Pre General Science Physics Chapter 1 Measurements Online Test

Sr. # Questions Answers Choice
1 Which quantity has different dimension? Tension Work Energy Torque
2 dimensions are the same for: Work and energy Force and weight None of these Both a and b
3 Dimension of mass is written as: M [M] (M) [m]
4 A dimension stands for the ___________ nature of certain physical quantity. super Quantitative Qualitative Both B and C
5 The maximum possible error in the reading for a meter rod with least count 1 mm is: 0.005 mm 0.05mm 0.5mm 5.0mm
6 The maximum possible error in the reading of an instrument is ______ its least count. Half of Quarter of Equal to Double than
7 For multiplication and division purposes, percentage uncertainties are: Add subtracted Multiplied Divided
8 For addition and subtraction purposes, absolute uncertainties are: Added Subtracted Multipiled Divided
9 Uncertainty is of following type/types: Absolute Fractional Percentage All of these
10 The error may occur due to: Negligence Faulty apparatus Inappropriate method all of these
11 If the absolute uncertainty of an instrument is 0.0a1 cm, then its least count will be : 0.005 cm 0.01 cm 0.02 cm 0.001 cm
12 The definite number of significant figures in 5000 is: Four Three Two One
13 Significant figures in 0.2020 are: Two Three Four Five
14 0.0001210 has ____________ significant figures. Four Three Seven Eight
15 The branch of physics which deals with the structure and properties of solids is called: Plasma physics Solid state physics Any of above Astrophysics
16 Density is defined as: Mass per volume Volume per mass Mass X volume Mass per length
17 Examples of physical quantities are: Length Color Effect of music All of these
18 In the equation E=mc2 value of c is? 186000 miles per hour 186000 miles per sec 3 X 10<sup>8</sup>m/sec Both A and C Both B and C
19 From sand, we get a material used for construction of computer chips. That material is called: Copper Lead<div><br></div> Silicon Germanium
20 From sand, we get a material used for construction with the motion of bodies under the action of forces is called: Optics Mechanics Thermodynamics Astrophysics
21 Electron is a particle whose mass is: Greater than that of a proton Smaller than of a proton and greater than mass of neutron Smaller than that of proton or neutron Greater than that of an atom
22 Physics is one of the branches of: Social sciences Physical sciences Biological sciences Abstract art
23 Branch of physics which deals with the study of stars and galaxies is called: Solid state physics Astrophysics Molecular physics Chemical physics
24 Silicon can be obtained from: Lead Uranium An isotope of oxygen Sand
25 Particles have the mass smallest of following is: Electron Proton Neutron Quark
26 The machines which deals with the objects moving with velocities approaching that of light is called: Relativistic mechanics Wave mechanics Quantum Statics mechanics
27 Astrophysics is a branch of physics, which deals with: Sub-atomic particles Stars and galaxies Light and sound Music
28 The information from far side of the universe are gathered by: Radio telescope Microscope Telescope Spectro scope
29 The study of physics involves? Structure of space and time Interaction of electromagnetic radiation with matter Both of them Chemical changes None of them
30 The quantity having dimension of ML2T02will earth is: 80 sec 500 sec 1.802 X 10<sup>4</sup>sec Aerophysics
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