FSc ICS MCAT ECAT Physics First Year Chapter 1 Measurements Multiple Choice Question (MCQ) Notes

FSc ICS MCAT ECAT Physics First Year Chapter 1 Measurements Multiple Choice Question(MCQ) Notes 1st Year Physics Notes Online Taleem Ilm Hub

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1. The branch of physics "wave mechanic"introduced by:

• Einstein
• Max Plank
• De-broglie
• Bohr

2. Physicists started believing that every thing about physics has been discovered by the end of:

• 20 th century
• 19 th century
• 15 th century
• None of these

3. Pascal is famous for his work:

• Hydrostatics
• Hydrodynamics
• Laws of gases
• Behaviour of elastic bodies

4. Systems international (SI) was established in:

• 1960
• 1967
• 1971
• 1930

5. The basic quantity among following is:

• Torque
• Force
• Mass
• Velocity

6. Which one of the scientist made some contribution to geometrical optics:

• Archimedes
• Pythagoras
• Euclid
• Plato

7. Which of the following is the derived quantity:

• Time
• Area
• Length
• Mass

8. Which of the following is set of supplementary units:

• Radian & kilogram
• Steradian & time
• Mole & radian
• Radian & steradian

9. The SI unit for measuring plane angle is:

• Radian
• Steradian
• Both first and second
• None of these

10. The present standard meter is defined as:

• The distance between  two points on an alloy bar
• The length of mean solar day
• The length equal to 1650763.73 wavelength of krypton 86-atom
• The distance travel by the light in vacuum during a time of 1/299792458 second

11. The system international (SI) built up from:

• Derived units
• Basic units
• Supplementary units
• All of these

12. One mile is equal to:

• 1.625 km
• 1.609 km
• 1.325 km
• 1.850 km

13. One inch is equal to:

• 1.32 cm
• 25.4 cm
• 2.10 cm
• 2.54 cm

14. One foot is equal to:

• 31.90 cm
• 30.84 cm
• 30.48 cm
• 84.30 cm

15. Number of nano second in a year is:

• 3.1536 * 10(7)
• 3.1536 * 10(9)
• 3.1536 * 10(16)
• None of these

16. One year is equal to:

• 3.2 * 10(7) sec
• 2.25 * 10(7) sec
• 3.35 * 10(7) sec
• All of these

17. Light year is the unit of:

• Light
• Time
• Velocity
• Distance

18. The unit of thermodynamic temperature is:

• K
• C
• F
• None of these

19. One atto is:

• 10(-20)
• 10(-16)
• 10(-14)
• 10(-18)

20. One femto is:

• 10(-16)
• 10(-12)
• 10(-15)
• 10(-9)

21. The number of significant figure in 8.80 * 10(6) kg is:

• 1
• 5
• 3
• 6

22. The number 64.350 is rounded off as:

• 64.35
• 64.46
• 64.36
• 64.4

23. In scientific notation, the number 0.01 may be written as:

• 10(-2)
• 10(-4)
• 10 * 10(-4)
• 1 * 10(-4)

24. If length = 0.233 m and width = 0.178 m, the most accurate area expressed space of significant figures is:

• 0.041 m(2)
• 0.0415 m(2)
• 0.041747 m(2)
• None of these

25. The number 0.0001 in scientific notation is:

• 1 * 10(4)
• 10(-3)
• 10 * 10(4)
• 10(-4)

26. One mega is equal to:

• 10(6)
• 10(-6)
• 10(3)
• 10(9)

27. The error in a certain measurement occurs due to:

• Negligence of a person
• Inappropriate technique
• Faulty apparatus
• All of the above

28. The uncertainty may occur due to:

• Limitation of an instrument
• Natural variance of the object
• Personal negligence
• All of the above

29. The least count of a unit meter rod is:

• 0.01 cm
• 0.01 mm
• Cannot be zero
• Can be zero

30. The number of base units in SI are:

• Four
• Five
• Six
• Seven

31. Deca, deci and mega, respectively mean:

• 10(1), 10(-1), 10(6)
• 10(6), 10(-1), 10(1)
• 10(6), 10(1), 10(-1)
• 10(1), 10(6), 10(-1)

32. 134.7 should be written in scientific notation as:

• 134.7
• 13.45 * 10(1)
• 1.347 * 10(2)
• 0.1347 * 10(3)

33. Pico, kilo and terra mean:

• 10(-12), 10(-3), 10(-18)
• 10(18), 10(3), 10(-12)
• 10(-12), 10(3), 10(12)
• 10(18), 10(-12), 10(3)

34. The average time the Earth takes to make exactly one rotation about its axis is defined as:

• A solar hour
• A solar day
• A light year
• A solar month

35. The distance x determined by the difference between two separate position measurements x1 = 10.5 +-(0.1) cm and x2 26.8 +-(0.1) cm. Then x will be recorded as:

• 16.3 cm
• 16.3 +-(0.1) cm
• 16.3 +-(0.2) cm
• 16.3 +-(0.01) cm

36. The length of a line was measured with a meter scale of least count = 1 mm by four students. The correct reading will be:

• 0.5426 m
• 0.542 m
• 0.54 m
• 0.5 m

37. Name the scientist who was awarded the Nobel Prize in physics in 1936 for the discovery of the positron:

• Chadwick
• Femi
• Anderson
• Einstein

38. The density of mercury is 13600 kg/m(3). Its value in CGS system will be:

• 13.6 g/cm(3)
• 1360 g/cm(3)
• 136 g/cm(3)
• 1.36 g/cm(3)

39. The unit of force and length are doubled, the unit of energy will be:

• 1/2 times
• 1/3 times
• 2 times
• 4 times

40. The dimensional formula [ML(0)T(-3)] is more closely associated with:

• Power
• Energy
• Intensity
• Velocity gradient

41. Which dimensions will be the same as that of time?

• LC
• R / L
• L / R
• C / L

42. Angular momentum has the same dimensions as:

• Plank's constant
• Universal gravitational constant
• Rydberg constant
• Boltzmann constant

43. Which of the two have same dimensions?

• Force and strain
• Force and stress
• Angular velocity and frequency
• Energy and strain

44. A student measured the diameter of a wire using a screw gauge with least count 0.001 cm and listed the measurements. The correct measurement is:

• 5.320 cm
• 5.3 cm
• 5.32 cm
• 5.3200 cm

45. Zero error belongs to the category of:

• Constant errors
• Personal errors
• Instrumental errors
• Accidental errors

46. Which one is the least sub-multiple?

• pico
• femto
• atto
• nano

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

• SI system
• CGS system
• British engineering system
• MKS system

48. Which of the following cannot be expressed as Nm(-2):

• Pressure
• Stress
• Surface tension
• Bulk modulus of elasticity

49. Which of the following units is used to measure the radius of nucleus?

• Micron
• Nanometer
• Angstrom
• Femtometer

50. Which of the following is not equal to watt?

• Joule / second
• Ampere * Volt
• Ampere(2) * ohm
• Ampere / volt

51. Temperature can be expressed as a derived quantity in terms of any of the following:

• Length and mass
• Mass and time
• Length, mass and time
• In terms of none of these

52. erg/m can be the unit of the measure of:

• Force
• Momentum
• Power
• Acceleration

53. IF the radius of the Earth shrinks by 1.5% (mass remaining same) then the value of acceleration due to gravity changes by:

• 1%
• 2%
• 3%
• 4%

54. Which of the following readings taken by microscope of least count 0.001 cm is correct?

• 3.28
• 3.00
• 3.000
• 0.02345

55. Which of the following is not a base unit in SI system:

• Temperature
• Amount of substance
• Light intensity
• Area

56. The minimum number of physical quantities which define other physical quantities is SI system are:

• Two
• Three
• Five
• Seven

57. Which of the following is not a unit of time:

• Leap year
• Light year
• Lunar month
• Micro second

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

• Radian
• Steradian
• Degree
• All of the above

59. The ratio of 1 nanometer to 1 attometer is equal to:

• 1 peta
• 1 tera
• 1 giga
• 1 mega

60. A precise measurement is the one which has:

• Less absolute uncertainty
• Less percentage uncertainty
• Large fractional uncertainty
• Large absolute uncertainty

61. The accuracy of measurement depends on:

• Absolute uncertainty
• Percentage uncertainty
• Quality of the instrument
• Calibration of the scale

62. Number of significant figure with increasing degree of approximation:

• Decreases
• Increases
• Remains unchanged
• None of the above

63. Solid angle subtended at the center by a sphere is:

• 2 π
• 4 π
• 6 π
• 8 π

64. A second pendulum strikes in a day:

• 3600 times
• 86400 times
• 43200 times
• 0.003 sec

65. The density of wood is 0.5g/cm(3) in CGS system of units. The corresponding value in SI units is:

• 500 kg/m(3)
• 5 kg/m(3)
• 0.5 kg/m(3)
• 5000 kg/m(3)

66. Physical quantity is/are:

• Time
• Density
• Temperature
• All

67. The error is constant for _______ error.

• Random
• Systematic
• Both first and second
• All

68. For 2450 number of significant digits:

• 4
• 3
• 2
• 1

69. Which of the following could be measured in the same units as force?

• Energy / Distance
• Energy * Distance
• Energy / Time
• Momentum * Distance

70. What is the ratio 1 micrometer / 1 Giga meter

• 10(-3)
• 10(-6)
• 10(-12)
• 10(-15)

Written by: Asad Hussain