9th class Physics unit 1 MCQs
Chapter 1 MCQs 9th class Physics
Physical Quantities and Measurements:
1. The branch of physics which deals with study of motion of objects, is called:
a. Mechanics
b. Sound
c. Thermodynamics
d. Kinematics
2. The study of internal structure of Earth is called:
a. Sound
b. Atomic Physics
c. Heat
d. Geo Physics
3. Refrigerator is based on the principles of:
a. Sound
b. Mechanics
c. Light
d. Thermodynamics
4. The word “science” is derived from:
a. Latin
b. Urdu
c. English
d. Arabic
5. Natural philosophy was divided into branches:
a. Five
b. Two
c. Seven
d. Three
6. The word scientia means:
a. Seeking
b. Knowledge
c. Writing
d. Reading
7. The branches of Physics are:
a. Nine
b. Seven
c. Ten
d. Eight
8. Physical sciences deals with the study of:
a. Bacteria
b. Living things
c. Micro organisms
d. Non living things
9. Natural philosophy was studied until:
a. Nineteenth century
b. Seventeenth century
c. Twentieth century
d. Eighteenth century
10. In nineteenth century, natural philosophy was divided into ……… distinct disciplines:
a. Four
b. Two
c. Five
d. Three
11. The branch of science in which we study matter, energy and their interaction is called:
a. Physical sciences
b. Chemistry
c. Natural philosophy
d. Physics
12. Car is based on the principles of:
a. Sound
b. Mechanics
c. Motion
d. Thermodynamics
13. The application of Physics is:
a. Car
b. Pulley
c. Clock
d. All
14. The device which allows us to contact people anywhere in the world and to get latest worldwide information is:
a. Printer
b. Mobile phone
c. Telegraph
d. All
15. Wind turbine is used to produce:
a. Water
b. Pollution free electricity
c. Pollution
d. Air for plants
16. Vacuum cleaner works on the principle of:
a. Light
b. Mechanics
c. Electricity
d. Physics
17. The study of ionic state of matter is called:
a. Plasma physics
b. Nuclear physics
c. Geophysics
d. Atomic physics
18. The branch of Physics which studies the structure and properties of atom is called:
a. Atomic Physics
b. Nuclear Physics
c. Plasma Physics
d. Geophysics
19. The basic quantity is:
a. Torque
b. Mass
c. Momentum
d. Volume
20. Identify the base quantity:
a. Force
b. Speed
c. Distance
d. Area
21. The number of base quantities in SI are:
a. Seven
b. Five
c. Eight
d. Six
22. A physical quantity possesses at least ……… characteristics in common:
a. Four
b. Two
c. Five
d. Three
23. Physical quantities are divided into ……… types:
a. Four
b. Two
c. Five
d. Three
24. Physical quantities are ……… quantities:
a. Non measurable
b. Readable
c. a and b both
d. Measurable
25. The base quantity is:
a. Power
b. Time
c. Energy
d. Work
26. Derived quantity is:
a. Volume
b. Force
c. Power
d. All
27. Base quantity is:
a. Mass
b. Temperature
c. intensity
d. All
28. The quantities on the basis of which other quantities are expressed are:
a. Physical
b. Base
c. Measurable
d. Derived
29. The number of base units in SI are:
a. Seven
b. Three
c. Nine
d. Six
30. Which one of the following is not a derived unit?
a. Newton
b. Pascal
c. Watt
d. Kilogram
31. Amount of a substance in terms of numbers is measured in:
a. Newton
b. Gram
c. Mole
d. Kilogram
32. The number of basic units are:
a. Seven
b. Three
c. Nine
d. Five
33. Kilogram is a:
a. Derived unit
b. Base unit
c. Derived quantity
d. Base quantity
34. The unit of density in system international is:
a. Kgm-2
b. Kg m
c. Kgm-3
d. Kgm-1
35. The International System of units was adopted in:
a. 1961
b. 1959
c. 1962
d. 1960
36 . 1 L is equal to:
a. 1000 ml
b. 10 ml
c. 10,000 ml
d. 100 ml
37. The SI unit of mass is:
a. Meter
b. Kilogram
c. Newton
d. Second
38. The SI unit of length is:
a. Millimeter
b. Meter
c. Centimeter
d. Kilometer
39. The SI unit of force is:
a. Watt
b. Newton
c. Pascal
d. Kilogram
40. 1 Newton is equal to:
a. ms2
b. ms-1
c. ms
d. ms-2
41. 1 Newton is equal to:
a. kgms2
b. kgms-1
c. kgms
d. kgms-2
42. Pascal is the unit of:
a. Pressure
b. Force
c. Volume
d. Weight
43. An interval of 200 micro seconds is equivalent to:
a. 2×10-4s
b. 0.2s
c. 2×10-6s
d. 0.02s
44. Which one of the following is the smallest quantity?
a. 100 grams
b. 0.01g
c. 5000 ng
d. 2mg
45. One micro meter is equal to:
a. 10-9 m
b. 10-6 m
c. 103 m
d. 10-3 m
46. One millimeter is equal to:
a. 1 dm3
b. 1 mm3
c. 1 m-3
d. 1 cm3
47. One tera is equal to:
a. 1012
b. 10-12
c. 1018
d. 10-18
48. One Femto is equal to:
a. 10-15
b. 10-12
c. 1015
d. 1012
49. One meter is equal to:
a. 10000 cm
b. 10 cm
c. 100 mm
d. 100 cm
50. One Mega meter is equal to:
a. 10-6 m
b. 106 m
c. 1012 m
d. 109 m
51. One Giga gram is equal to:
a. 103 g
b. 109 g
c. 10-6 g
d. 10-9 g
52. One pico meter is equal to:
a. 106 m
b. 1012 m
c. 10-6 m
d. 10-12 m
53. The words or letters added before SI units are:
a. Derived quantities
b. Prefixes
c. instruments
d. Base quantities
54. 62750 in scientific notation is:
a. 0.6275×105
b. 62.75×103
c. 627.5×102
d. 6.275×104
55. Which instrument is most suitable to measure the internal diameter of a test tube?
a. Measuring tap
b. Meter
c. Screw gauge
d. Vernier Calipers
56. A student claimed the diameter of a wire as 1.032cm using Vernier Callipers. Up to what extent do you agree with it?
a. 1.03mm
b. 1mm
c. 1.032mm
d. 1.0mm
57. A measuring cylinder is used to measure:
a. Volume
b. Mass
c. Level of a liquid
d. Area
58. A student noted the thickness of a glass sheet using a screw guage. On the main scale, it reads 3 divisions while 8 division on the circular scale coincides with index line. Its thickness is:
a. 3.8 mm
b. 3.8 cm
c. 3.8 cm
d. 3.08 mm
59. One cubic meter is equal to:
a. 10 liters
b. 100 liters
c. 106 liters
d. 1000 liters
60. One liter is equal to ……… milliliters:
a. 104
b. 102
c. 105
d. 103
61. One liter is equal to:
a. 1 dm3
b. 1 mm
c. 1 m3
d. 1 cm3
62. The least count of meter rule is:
a. 0.01 mm
b. 1 mm
c. 1 cm
d. 0.1 mm
63. The length of a meter rule is:
a. 2 meters
b. 1 meter
c. 0.5 meter
d. None of the above
64. The least count of a Vernier Callipers is:
a. 1 mm
b. 0.01 mm
c. 1 cm
d. 0.01 cm
65. The least count of a digital Vernier Callipers is:
a. 0.1 cm
b. 0.1 mm
c. 1 mm
d. 0.001 mm
66. The least count of a screw gauge is:
a. 0.01 mm
b. 1 cm
c. 1 mm
d. 0.001 m
67. A metre rule is used to measure:
a. Volume
b. Diameter
c. Mass
d. Length
68. One centimeter in metre rule is equal to:
a. 5 dm
b. 10 dm
c. 5 dm
d. 10 mm
69. While using a meter rule, eye must be kept vertically ……… the reading point:
a. Above
b. Left
c. Near
d. Right
70. Measuring tape is made of:
a. Cotton
b. Wool
c. Wood
d. Paper
72. The difference between one small division on main scale and one vernier scale division is:
a. 0.01 mm
b. 1 mm
c. 0.01 mm
d. 0.1 mm
73. The most accurate instrument to find the length of extreme small object is:
a. Meter rule
b. Vernier calipers
c. Screw guage
d. All
74. As thimble completes its one rotation, ……… divisions pass the index line:
a. 50
b. 10
c. 20
d. 100
75. The most accurate mass measuring instrument is:
a. Electronic balance
b. Physical balance
c. Lever balance
d. None of the above
76. Beam balance can measure ……… of one gram:
a. 1/1000
b. 1/10
c. 1/10000
d. 1/100
77. Physical balance can measure ……… of one gram:
a. 1/1000
b. 1/10
c. 1/10000
d. 1/100
78. Electronic balance can measure ……… of one gram:
a. 1/1000
b. 1/10
c. 1/10000
d. 1/100
79. The types of stopwatches are:
a. Four
b. Two
c. Five
d. Three
80. Mechanical stopwatch can measure time interval up to a minimum ……… second:
a. 0.01
b. 1
c. 0.001
d. 0.1
81. Digital stopwatch can measure the time interval up to a minimum ……… second:
a. 0.01
b. 1
c. 0.001
d. 0.1
82. Significant figures in an expression are:
a. all the accurately known digits and the first doubtful digit
b. all the accurately known digits
c. all the accurately known and all the doubtful digits
d. all the digit
83. The number of significant figures in 0.00580 is:
a. 3
b. 6
c. 2
d. 5
84. 0.027 has significant figures:
a. 3
b. 2
c. 4
d. 1
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