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

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**Both Bold and Underlined option is correct**

**Both Bold and Underlined option is correct**

**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)**

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