FSc ICS MCAT ECAT Physics First Year
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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