11th Physics MCQs Preparation 2022 and Onwards (Unit:  Measurements : Set-2 (50 MCQs))  for National MDCAT, ECAT, FPSC, PPSC, JOB Exam, Physics Lecturer, SSC, HSSC (F.Sc.), BS, MS Exams NTS, ETS, etc.



1. The branch of science that deals with the study of matter, and Energy and relationship between them called:




... Answer is B. Physics
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2. Which instrument has recently proved the Big Bang Theory?




... Answer is B. Radio Telescope
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3. At the end of which century physicists started believing that everything about physics has been discovered?




... Answer is C. `\19^{th}` Century
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4. Which one is not a branch of physical sciences?




... Answer is D. Biology
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5.  The branch of physics that deals with atomic nuclei is called




... Answer is D. Nuclear physics
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6. The branch of physics that deals with the ultimate particles of which the matter is composed is:




... Answer is A. Particle physics
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7. Pascal is famous for his work: :




... Answer is C. Hydrodynamics
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8. Silicon is abundantly found in:




... Answer is B. Sand
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9. Constants in any formula cannot be determined by dimensional analysis, however, it can be found by:




... Answer is A. Experiments
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10. Name the scientist who was awarded the Nobel Prize in physics in 1936 for the discovery of the positron:




... Answer is D. Anderson`
 ----------------------


11. The scientist who has some contribution to geometrical optics:




... Answer is B. Archimedes
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12. The number of base units in SI are:




... Answer is C. 7
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13. International Systems of Units (SI) was established in:




... Answer is D. 1960
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14.  International Systems of Units (SI) built up from:




... Answer is D. All of these
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15. Which one is a pair of SI base units?




... Answer is A. Kilogram, Kelvin
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16.. The base quantity among the following is:




... Answer is A. Mass
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17. The base quantity among the following is: :




... Answer is A. Time
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18. Which of the following is the derived quantity:




... Answer is C. Volume
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19. SI unit for the intensity of light is




... Answer is A. Candela
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20. Which of the following is a set of supplementary units:




... Answer is D. Radian ＆ steradian
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21. The SI unit for measuring a plane angle is:




... Answer is A. Radian
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22. In which system of units the unit of viscosity is Poise:




... Answer is B. CGS
η=F/6Ï€rv = ( dyne. s)/cm² = poise


23. Which system of the units is a coherent system of units in mechanics?




... Answer is B. greater
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24. What SI unit of coefficient of viscosity is?




... Answer is B. kg m⁻¹ s⁻¹
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25.  The plane angle and solid angle are purely




... Answer is C. Geometrical quantities
Both require geometrical figures for their definition


26. Which of the following is not a unit of time?




... Answer is A. Lightyear
A light year is the unit of distance


27. Which of the following quantities has not been expressed in proper units? :




... Answer is A. Energy = kg m s⁻²
Energy = Work = F.D = N m = kg m² s⁻²


28. The present standard meter is defined as:




... Answer is C. The length equal to 1650763.73 wavelengths of the krypton-86 atom
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29. Light year is a unit of




... Answer is A. Distance
A light year is a unit of astronomical distance that is equivalent to the distance that light travels in one year


30. Three-dimensional angle subtended at the center of the sphere by an area of its surface equal to the square of the radius of the sphere is called:




... Answer is D. All of these​
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31. One lightyear is equal to




... Answer is C. 9.46 ｘ10 ¹⁵ m
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32. The SI unit of thermodynamic temperature is:




... Answer is A. K
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33. The SI unit for measuring a plane angle is:




... Answer is B. Radian
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34. One light-year is equal to?




... Answer is C. 9.5 × 10¹⁵ m
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35.  What will be the angle subtended by one surface of the cube at its center?




... Answer is D. `\frac {2Ï€}{3}` steradians
The solid angle at the center of the cube (of 6 faces/surfaces ) is 4Ï€ steradians. For one surface we will divide it by 6 so, 4Ï€/6 steradians = `\frac {2Ï€}{3}` steradian


36. The equation relating pressure and density is p = pgh. How can both sides of this equation be written in terms of base units?




... Answer is C. [kg m⁻¹ s⁻¹] = [kg m⁻¹ ][m s⁻²] [m]
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37. Which one is a pair of SI base units? :




... Answer is D. Kilogram, Kelvin
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38. Which one is the derived quantity in SI units?




... Answer is A. Electric charge
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39. Which of the following is the CORRECT way of writing units?




... Answer is D. 43 kg m⁻³
Option A is wrong because, in units, symbols are used. Option B is wrong because no compound prefixes are used in units. Option C is wrong because the unit of mass starts with small letters kg according to the Bureau Internationale des Poids et des Measures. Option D is correct because the units are spaced and written properly


40. The density of mercury is 13600 kg/m(3). In the CGS system its value will be:




... Answer is A. 13.6 g cm³
 ----------------------


41. In which system, the unit of force is a base unit:




... Answer is B. British engineering system
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42. Pascal is a unit of:




... Answer is D. All of these
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43. The force of one newton per meter square is equal to:




... Answer is C. Pascal
P=`\frac {F}{A}`


44. Which of the following is a unit that of force?




... Answer is B. mN
mN = 10³ N and Newton N is the unit of Force


45.  Electron volt is a unit of




... Answer is C. Energy
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46. Solid angle subtended at the center by a sphere is:




... Answer is C. 4Ï€
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47. erg cm⁻¹ is the unit of which quantity in the CGS system: :




... Answer is D. Force
F = `\frac {W}{d}` = `\frac {erg}{cm}`


48. One astronomical unit is a distance equal to




... Answer is D. 1.496 × 10¹¹ m
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49. The solid angle subtended at the center of a sphere by an area of its surface equal to the square of the radius of the sphere is called:




... Answer is D. Steradian
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50. Temperature can be expressed as a derived quantity in terms of any of the following:




... Answer is D. None of these
Because it is a Base quantity and can NOT be expressed as a derived quantity.




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