Class 11 Physics MCQs PDf Chapter 1
If you are looking for physics MCQs then you are at the right place. Here you will get class 11 physics MCQs. explore the world of physics through our collection of multiple-choice questions of physics. These physics MCQS 11 class, cover chapter 1 of the Sindh textbook board and the chapter name is “The Introduction to Physics” Many topics are covered in these multiple choice questions and these MCQs are specially designed for students who are preparing for the MDACT, ECAT, MCAT GRE, GMAT, NTS Tests (NAT, GAT) or any other medical or engineering university entry test these physics MCQs will help you to get maximum marks in the entrance test and also these MCQs challenge your knowledge and help you to learn something new. Whether you’re a student or just curious about physics, MCQs will test your knowledge and problem-solving skills. If you’re in the 11th grade, our Class 11 Physics MCQs tailored for your physics curriculum of Sindh textbook board Jamshoro can make learning physics simpler for you because we covered 160+ basic MCQs of physics which cover the introductory chapter of the Class 11 book. These questions focus on the main and basic ideas of physics and are helpful for getting ready for exams. From how things move to modern physics, our Class 11 physics MCQs are a great way to understand and practice physics and also you can Get access to lots of physics MCQs in our downloadable PDF (contact us for PDF). This physics MCQs pdf you can download and access anywhere for learning and practicing easier. Whether you need a quick review or a thorough practice tool, our physics MCQs PDF is great for all levels of learners. Learning physics is fun and achievable with these resources. Explore for other subjects MCQs.
Physics MCQs 11 class Let Get Started
1 Muslim scientist made important discoveries in the period.
A. 600 AD – 1500 AD
B. 1150 AD – 1750 AD
C. 100 AD – 800 AD
D. 500 AD – 1075 AD
A. 600 AD – 1500 AD
2 The Muslim scientist Al-khawarzami is famous for his work.
A. Physics
B. Algebra
C. Chemistry
D. Medicine
Algebra
3 Fundamental ideas of modern celestial mechanics were established.
A. Kepler and Galileo
B. Newton
C. Robert Hooke
D. Tycho and helley
Kepler and Galileo
4 The decimal system was invented by
A. Indians
B. Greeks
C. Chinese
D. Egyptians
Indians
5 Which of the physical quantities does not have the same units?
A. Impulse and momentum
B. Pressure and strain
C. Planks constant and angular momentum
D. Bulk modulus and compressibility
Pressure and strain
6 The SI unit of force is:
A. Newton
B. Dyne
C. Slug
D. Foot-pound
Newton
7 The SI unit of energy is:
A. Joule
B. Calories
C. Slug
D. Electron volt
Joule
8 In the international system of units, the unit of mass is:
A. Gram
B. Kilogram
C. Milligram
D. Pound
Kilogram
9 The SI unit of power is:
A. Horsepower
B. Joule
C. Calorie
D. None of these
None of these
10 The number of fundamental units of measurement in science is:
A. Four
B. Five
C. Three
D. Seven
Seven
11 In the SI unit system, there are _ basic units.
A. Three
B. Five
C. Seven
D. Nine
Seven
12 The dimensions of velocity are:
A. [L][T]
B. [L][T-¹]
C. [L][T²]
D. [L²][T¹]
[L][T-¹]
13 The dimensions of work may be:
A. [M][L]²[T]-²
B. [M][L³][T]
C. [M][L][T]-¹
D. [M][L]-¹[T]-¹
[M][L]²[T]-²
14 The maximum possible error in the reading for a meter rod (with a least count of 1 mm) is:
A. +-0.1 mm
B. 0.5 cm
C. 0.05 cm
D. 1 mm
1 mm
15 The branch of science which deals with the properties of matter, energy, and their relationship is called __.
A. Physics
B. Chemistry
C. Mechanics
D. Magnetism
Physics
16 The branch of science, that deals with the forces acting on bodies in motion, is called __.
A. Chemical physics
B. Mechanics
C. Magnetism
D. Medical physics
Mechanics
17 __ deals with the structure of atoms and properties of atoms.
A. Atomic physics
B. Nuclei physics
C. Mechanics
D. None of these
Atomic physics
18 The Islamic era (600-500 AD) is also known as _.
A. Historical era
B. Muslim period
C. British era
D. Greek period
Muslim period
19 Archimedes is also known as the founder of _ physics.
A. Optical
B. Mathematical
C. Bio-chemical
D. Modern
Mathematical
20 Kepler and _ established the fundamental ideas of celestial mechanics.
A. Newton
B. Faraday
C. Galileo
D. Thales
Galileo
21 “Candela” is the unit name of quantity _.
A. Time
B. Intensity
C. Mole
D. Meter
Intensity
22 The unit name of temperature is _.
A. Degree Kelvin
B. Candela
C. Mole
D. Kilogram
Degree Kelvin
23 “Ampere” is the unit of __.
A. Intensity
B. Electric current
C. Temperature
D. Candela
Electric current
24 The supplementary units are known as _.
A. Derived units
B. Small units.
C. Positive units
D. None of these
None of these
25 The length is measured in __.
A. Kilometers
B. Seconds
C. Gram
D. Kilogram
Kilometers
26 We can write one kilo = _.
A. 10⁴
B. 10⁵
C. 10³
D. 10⁶
10³
27 We can write one mega =__.
A. 10-⁹
B. 10¹⁴
C. 10¹³
D. 10⁶
10⁶
28 The round figure of 46.55 is:
A. 46.6
B. 465.5
C. 455.6
D. None of these
46.6
29 Newton is the unit of __.
A. Energy
B. Electricity
C. Force
D. None of these
Force
30 The branch of physics which deals with the properties, and interaction of nuclear particles (protons and neutrons) is called:
A. Molecular physics
B. Plasma physics
C. Nuclear physics
D. Solid state physics
Nuclear physics
31 The physics of the Islamic era ranges from _
A. 300 BC to 600 AD
B. 600 AD to 1500 AD
C. 1500 AD to 1700 AD
D. 1700 AD to 1750 AD
600 AD to 1500 AD
32 The theory of relativity was introduced (in 1905) by
A. Planck
B. Einstein
C. Maxwell
D. Rutherford
Einstein
33 The fundamental physics quantities which form the basis for the MKS system are.
A. Force, weight, and time
B. Mass, length, and time
C. Mass, length, and force
D. Mass, energy and time
Mass, length, and time
34 fundamental units in the MKS system are
A. Gram, dyne, and second
B. Kilogram, centimeter, and second
C. Kilogram, Newtown, and second
D. Kilogram, meter, and second
Kilogram, meter, and second
35 the units which are based on one or more fundamental units are called
A. Fundamental units
B. Derived units
C. Basic units
D. Non of the above
Derived units
36 Which of the following is not a derived unit
A. Newton
B. Meter/sec
C. Kilogram/meter³
D. Second
Second
37 Which of the following is not a fundamental unit in SI units
A. Kilogram
B. Ampere
C. m³
D. Kelvin
m³
38 light-year is the unit of
A. Time
B. Distance
C. Light
D. Velocity
Distance
39 Which of the following are the dimensions of force
A. LT-¹
B. LT-²
C. M¹LT-²
D. Non of these
M¹LT-²
40 The dimensions of weight are
A. MLT-¹
B. MLT-²
C. LT-²
D. ML²T
MLT-²
41 the SI unit of angular displacement is
A. Meter
B. Foot
C. Radian
D. Centimeter
Radian
42 the dimensions of frequency are
A. LT
B. LT-¹
C. MT-¹
D. T-¹
T-¹
43 significant figures in 0.0001 is/are
A. One
B. Two
C. Three
D. Four
One
44 candela is the unit of
A. Electric flux
B. Magnetic induction
C. Torque
D. Luminous intensity of light
Luminous intensity of light
45 the unit of absolute temperature is
A. Fahrenheit
B. Centigrade
C. Kelvin
D. Non of these
Kelvin
46
47 The branch of physics which deals with the motion of the particles and bodies under the action of a given force is called
A. Solid state physics
B. Quantum physics
C. Mechanics
D. Nuclear physics
Mechanics
48 the branch of physics which deals with the structure and properties of the atoms as determined by the electron outside the nucleus
A. Nuclear physics
B. Atomic physics
C. Particle physics
D. Biophysics
Atomic physics
49 The branch of physics which deals with the structure, properties, and various phenomena regarding nuclei is _____
A. Atomic physics
B. Astrophysics
C. Nuclear physics
D. Plasma physics
Nuclear physics
50 Muslim scientist who wrote book on physics, mathematics, astronomy engineering was _______
A. Abu-Ali-Hassan Ibn-al-Haitham
B. Al-Beruni
C. Yaqub kindi
D. Muhammad bin Musa
Abu-Ali-Hassan Ibn-al-Haitham
51 radio was invented by
A. Marconi
B. Edison
C. Rutherford
D. Davison
Marconi
52 in the C.G.S system the unit of length is
A. Foot
B. Meter
C. Centimeter
D. Inch
Centimeter
53 in the MKS system the unit of current is
A. Ampere
B. Volt
C. Coulomb
D. Ohm
Ampere
54 The new era of modern physics began near the end of
A. 16th century
B. 17th century
C. 18th century
D. 19th century
19th century
55 The theory of relativity was produced in 1905 by
A. Einstein
B. Maxwell
C. Young
D. Kelvin
Einstein
56 Which of the following is not a fundamental quantity?
A. Length
B. Temperature
C. Electric charge
D. Ampere
Electric charge
57 the unit of torque in SI units is
A. Meter
B. Newton
C. Kilogram
D. Newton. meter
Newton
58 In the international system of the units called SI units the unit of mass is
A. Pound
B. Gram
C. Kilogram
D. Quintal
Kilogram
59 in the SI system the unit of length is
A. Millimetre
B. Centimeter
C. Meter
D. Kilometer
Meter
60 in the SI system the unit of the time is
A. Second
B. Minute
C. Hour
D. Day
Second
61 In the SI system the unit of temperature is
A. Kelvin
B. Degree centigrade
C. Degree Fahrenheit
D. Degree Celsius
Kelvin
62 In the SI system the unit of energy is
A. Calorie
B. Joule
C. Erg
D. Dyne
Joule
63 The unit of force in the MKS system is
A. Newton
B. Poundal
C. Dyne
D. Watt
Newton
64 the unit of work in the MKS system is
A. Erg
B. Dyne
C. Watt
D. Joule
Dyne
65 the unit of power in the MKS system is
A. Dyne
B. Erg
C. Watt
D. Joule
Watt
66 joule is the unit of
A. Force
B. Work
C. Power
D. Velocity
Work
67 which one is a unit of time
A. Micro
B. Half-year
C. Angstrom
D. Light year
Half-year
68 absolute units of work in the C.G.S system is
A. Foot pound
B. Erg
C. Joule
D. Dyne
Erg
69 the unit of velocity in the MKS system can be
A. Centimeter/sec
B. Centimeter/sec²
C. Meter/sec
D. Meter/sec²
Meter/sec
70 meters per second is the unit of
A. Acceleration
B. Velocity
C. Surface tension
D. Momentum
Velocity
71 Which of the following is a fundamental quantity
A. Volume
B. Velocity
C. Time
D. Force
Time
72 Which of the following is a derived quantity
A. Mass
B. Length
C. Time
D. Velocity
Velocity
73 the unit of power is
A. Kilowatt-hour
B. Joule
C. Dyne
D. Kilowatt
Kilowatt
74 the dimensional formula of angular velocity is
A. M⁰L⁰T-¹
B. MLT-¹
C. M⁰L⁰T¹
D. ML⁰T-²
M⁰L⁰T-¹
75 Dimensions of power is
A. M¹L²T-³
B. M²L¹T-²
C. M¹L²T-¹
D. M¹L¹T-²
M¹L²T-³
76 Dimensions of the couple is
A. ML²T-²
B. MLT-²
C. ML-¹T-³
D. ML-²T-²
ML²T-²
77 in the MKS system the unit of pressure is
A. Dyne/sm³
B. Atmosphere
C. Pascal
D. Cm of Hg
Pascal
78 orange light emitted from krypton-86 atoms was used to define
A. Kilogram
B. Meter
C. Centimeter
D. Second
Meter
79 the dimensions of [½ at²] are that of
A. Acceleration
B. Velocity
C. Length
D. Time
Length
80 the branch of physics which deals with the motion of bodies under the action of force is called
A. Mechanics
B. Statistical mechanics
C. Thermodynamics
D. Electrostatic
Mechanics
81 The branch of science which deals with properties of matter and energy is called
A. Chemistry
B. Biology
C. Geography
D. Physics
Physics
82 Physics is a quantitative science based primarily on
A. Fundamental quantities
B. Definition
C. Experiment and measurement
D. Description of facts
Experiment and measurement
83 ML²T³ represents the dimensions of:
A. Power
B. Work
C. Strain
D. Young’s modulus
Power
84 the Muslim scientist who wrote the book on astronomy, algebra, and arithmetic was
A. Ibn-al-Haitham
B. Al-Beruni
C. Al-khawarizmi
D. Jabir bin Hayyan
Al-khawarizmi
85 the first book of physics was written by
A. Kelvin
B. Aristotle
C. Faraday
D. Newton
Aristotle
86 kilogram is the unit of
A. Mass
B. Weight
C. Volume
D. Density
Mass
87 work is measured in joules while energy is expressed in
A. Watt
B. J.s
C. J/s
D. J
J
88 an example of fundamental quantity is
A. Area
B. Volume
C. Length
D. Velocity
Length
89 Ibn-al-Haitham developed
A. Mechanics
B. Acoustics
C. Relativity
D. Optics
Optics
90 Which one of the following is a fundamental quantity?
A. Area
B. Candela
C. Acceleration
D. Velocity
Candela
91 The special theory of relativity was published in 1905 by
A. Lorentz
B. Schrödinger
C. Einstein
D. Max Plank
Einstein
92 Which one of the following is not a fundamental unit?
A. Meter²
B. Meter
C. Kelvin
D. Ampere
Meter²
93 the SI system of units comprises
A. Three basic units
B. Five basic units
C. Six basic units
D. Seven basic units
Seven basic units
94 ML-¹T⁰ is the dimensional representation of
A. Weight density
B. Linear mass density
C. Volume mass density
D. Surface density
Linear mass density
95 which of the following quantities have the same dimensions:
1) power 2) energy 3) torque
A. 1 and 2
B. 1 and 3
C. 2 and 3
D. 1, 2 and 3
2 and 3
96 pinhole camera was invented by
A. Al-Beruni
B. Yaqoob Al-kindic
C. Ibn-al-Haitham
D. Al-khawarizmi
Ibn-al-Haitham
97 Physics is one of the branches of
A. Life sciences
B. Physical sciences
C. Biological sciences
D. Social sciences
Social sciences
98 the famous mathematician and founder of algebra was
A. Al kindi
B. Al-khawarizmi
C. Al Bruni
D. Naseruddin This
Al-khawarizmi
99 zero is significant only if it
A. Lie to the left of the significant digit
B. Is between two digits
C. Is to the right of a significant digit
D. Is before the decimal point
Is between two digits
100 A second is defined as the duration of vibration of
A. Carbon atom
B. Cesium atom
C. Radium atom
D. Nitrogen atom
Cesium atom
101 Physics is a quantitative science based primarily on
A. Definition
B. Fundamental quantities
C. Experiment and measurement
D. A collection of skills
Experiment and measurement
102 the most basic branch of “mechanics” of physics deals with the
A. Gravitational, electromagnetic, and nuclear fields
B. Acoustics
C. Motion of particles under forces
D. Optics
Motion of particles under forces
103 the Nuclear physics is concerned with the study of the properties of _____
A. Atoms
B. Molecules
C. Electrons
D. Matter
Atoms
104 it is concerned with the application of modern physics to the astronomical phenomena
A. Astrophysics
B. Plasma physics
C. Biophysics
D. Electromagnetism
Astrophysics
105 it is one the oldest and most highly organized of all present sciences
A. Physics
B. Chemistry
B. Biology
D. Astronomy
Physics
106 The progress of Muslims in the field of science is appreciable in the
A. 3000 BC to 600 AD
B. 1500 AD to 1700 AD
C. 600 AD to 1500 AD
D. 1700 AD to 1890 AD
600 AD to 1500 AD
107 which of the following periods is called the period of classical physics
A. 3000 BC to 600 AD
B. 1500 AD to 1700 AD
C. 600 AD to 1500 AD
D. 1700 AD to 1890 AD
1700 AD to 1890 AD
108 Historical records show that the ancient Babylonians and Egyptians as early as 3000 BC were familiar with some of the fundamental principles of
A. Mathematics
B. Physics
C. Chemistry
D. Biology
Physics
109 the Muslim scientist who wrote a number of books on Algebra, astronomy, and arithmetic was
A. Abu Abdullah Muhammad ibn-jaber-Al-Battani
B. Ibn-al-Haitham
C. Jabir bin Hayyan
D. Al-khawarizmi
Al-khawarizmi
Also Read: best-class-11-physics-MCQs
110 from approximately 700 BC to 150 AD very definite advances in physics were made by the
A. Arabs
B. Egyptian
C. Greeks
D. Romans
Greeks
111 Who established the fundamental ideas of modern celestial mechanics based on observations?
A. Kepler
B. Galileo
C. Gilbert
D. Both a and b
Both a and b
112 Pythagoras added a lot in
A. Mathematics
B. Physics
C. Botany
D. Trigonometry
Physics
113 who enriched the heritage of science with number and decimal system?
A. Indians
B. Chinese
C. Arabs
D. Egyptians
Indians
114 Who added precious knowledge of astronomy to science?
A. Euclid
B. Potolmey
C. Thales
D. Archimedes
Potolmey
115 Who improved upon the calculations of the orbits of the moon and certain planets?
A Al-Beruni
B. Abu Abdullah Muhammad Ibn jabir Al-battani
C. Al-khawarizmi
D. Jabir bin hayyan
Abu Abdullah Muhammad Ibn jabir Al-battani
116 Omar Khayyam was expert in
A. Physics
B. Chemistry
C. Mathematics
D. Non of these
Mathematics
117 if length = 0.233m and width 0.178m, the most accurate areas expressed in terms of significant figures is
A. 0.0391m²
B. 0.041563m²
C. 0.041474m²
D. 0.041m²
0.041474m²
118 Physics can be defined as the study of
A. Chemical properties of matter
B. Physical properties of matter
C. Relation between matter and energy
D. Both b and c
Both b and c
119 prior to 1900 AD physics comprised of
A. Mechanics, sound, light, Heat, magnetism, and electricity
B. Sound, light, nuclear physics, heat, plasma physics, and mechanics
C. Astrophysics, light, heat, magnetism, electricity and sound
D. All of these
Mechanics, sound, light, Heat, magnetism, and electricity
120 Physics can be defined as a branch of science based on
A. Observation and analysis of facts
B. Experimental observation and quantitative measurement
C. Mathematical calculation and interpretation
D. Replication and verification of known facts
Experimental observation and quantitative measurement
121 The branch of physics that deals with the study of production propagation and properties of sound waves is called
A. Magnetic
B. Optics
C. Statics
D. Acoustics
Acoustics
122 if 0.61 is added to 167 with due regard to significant figures, then we get:
A. 168
B. 167
C. 167.61
C. 167.6
167.61
123 high energy physics deals with the
A. Study of electron behavior
B. Study of electron charge
C. Study of mechanics of energetic bodies
D. Study of properties and behavior
Study of properties and behavior
124 which one of the following Muslim scientists has made a significant contribution to the study of alchemy
A. Jabir bin Hayyan
B. Abu Abdullah Muhammad
C. Ibn-al-Haitham
D. Ibn-e-sina
Jabir bin Hayyan
125 The book “Kitab-ul-qanoon-ul-masoodi” was written by
A. Ibn-e-sina
B. Al-Razi
C. Abu-Rehan Al-Beruni
D. Ibn-al-Haitham
Abu-Rehan Al-Beruni
126 the first book on analytical “Hisab-ul-jabrwal-Moqabi” was written by
A. Al-khawarizmi
B. Al-Beruni
C. Al-Razi
D. Ibn-e-sina
Al-khawarizmi
127 “Kitab-ul-Manazir” the famous book on optics written by
A. Ibn-e-sina
B. Al-khawarizmi
C. Jabir-bin-Hayyan
D. Ibn-al-Haitham
Ibn-al-Haitham
128 in the international system of units, the unit of length, mass, time, electric current, temperature, intensity of light, and quantity of light and quantity are called
A. Derived
B. Basic
C. Fundamental
D. Only b and c
Only b and c
129 the number of significant figures in 0.098000 is:
A. 4
B. 2
C. 3
D. 6
2
130 1 degree is equal to _____ radians:
A. 0.0245
B. 0.0561
C. 3.1423
D. 0.0174
0.0174
131 the famous mathematician and the founder of algebra was
A. Al-kindi
B. Al-khawarizmi
C. Al-Beruni
D. Naseruddin Tusi
Al-khawarizmi
132 10-⁹ second are equivalent to:
A. Deci second
B. Nanosecond
C. Milli second
D. Microsecond
Nanosecond
133 The standard of time in the SI system is the clock of:
A. Uranium
B. Rubidium
C. Cesium
D. Radium
Cesium
134 one Angstrom equals
A. 10-⁸ cm
B. 10⁸m
C. 10-⁶m
D. 10⁸mm
10-⁸ cm
135 10 Giga Hertz is equivalent to
A. 10¹⁰ Hz
B. 10⁹ Hz
C. 10⁷ Hz
D. 10-¹⁰ Hz
10¹⁰ Hz
136 Which of the following is the unit of electrical energy?
A. Kg m/s²
B. Dyne
C. Kw-hr
D. Joules/sec
Kw-hr
137 one Newton is equal to:
A. 10² Dynes
B. 10³ dynes
C. 10⁴ dynes
D. 10⁵ dynes
10⁵ dynes
138 the unit of dimensions of which of the following pairs of physical quantities are identical?
A. Impulse and momentum
B. Stress and strain
C. Pressure and density
D. Gravitational potential and energy
Impulse and momentum
139 the dimensions of impulse are the same as that of
A. Energy
B. Work
C. Power
D. Momentum
Momentum
140 0.0084 has _____ significant figures
A. 2
B. 4
C. 5
D. 1
2
141 The ______ sciences deals with the properties and behavior of non-living things:
A. Natural
B. Social
C. Physical
D. Biological
Physical
142 The people of _______ were the pioneers of the decimal system:
A. China
B. Indus valley
C. Euphrates
D. Egypt
Indus valley
143 Physics is the quantitative science based primarily on:
A. Definition
B. Experiment and measurement
C. Hypothesis
D. A collection of skills
Experiment and measurement
144 The branch of science, which deals with the interaction of matter and energy, is called
A. Chemistry
B. Mathematics
C. Statistics
D. Physics
Physics
145 Some concepts of static electricity were introduced by:
A. Greeks
B. Chinese
C. Thales
D. Einstein
Thales
146 The theory which modified Newton’s laws of motion for describing the bodies moving at a speed comparable to the speed of light is:
A. Electromagnetic theory
B. Faraday laws
C. Theory of relativity
D. Collision theory
Theory of relativity
147 Astrophysics deals with:
A. Particles in space
B. Elementary particles
C. Neutrons protons
D. Electrons
Particles in space
148 Physics is the science based on:
A. Interaction between matter and energy
B. Energy of the material
C. Mass of the material
D. Neither energy nor matter
Interaction between matter and energy
149 the branch of sciences that deals with the properties of matter and energy along with the interaction between them is known as:
A. Geography
B. Geology
C. Biology
D. Physics
Physics
150 one microsecond is:
A. 10-⁶ sec
B. 10-⁹ sec
C. 10⁶ sec
D. 10-³ sec
10-⁶ sec
151 65 mm is equivalent to approximately:
A. 1.5 inches
B. 2.6 inches
C. 5.5 inches
D. 10.5 inches
2.6 inches
152 of the following the largest quantity is:
A. 0.47 cm
B. 47×10-⁴ cm
C. 4.7×10-² cm
D. 0.0000047×10⁴ cm
0.47 cm
153 the mm is the unit of:
A. Acceleration
B. Distance
C. Velocity
D. Force
Distance
154 0.0046 can be written in scientific notation as:
A. 4.6 X 10-³
B. 4.6 X 10-² cm
C. 460 X 10
D. 46 X 10-²
4.6 X 10-³
155 a kilogram is a unit of:
A. Weight
B. Mass
C. Volume
D. Density
Mass
156 in the following, the smallest quantity is:
A. 6.653 km
B. 0.635 km
C. 6.35 X 10⁴ m
D. 0.635 X 10⁸ mm
0.635 km
157 one nanometer is equal to:
A. 10-⁸ m
B. 10-¹⁰ m
C. 10-⁹ m
D. 10-¹² m
10-⁹ m
158 1 X 10⁵ is written in an ordinary form as:
A. 1000
B. 1.00000
C. 100000
D. 0.10000
100000
159 6 X 10-¹²/2 X 10-⁶ will be equal to:
A. 3 X 10⁶
B. 3 X 10¹⁸
C. 3 X 10¹²
D. 3 X 10-⁶
3 X 10-⁶
160 density of air is 1.2 kg/m³. It can be expressed in gm/cm³ by:
A. 1.2 X 10⁶
B. 1.2 X 10³
C. 1.2 X 10-⁶
D. 12 X 10-⁴
12 X 10-⁴
161 one femtosecond is equal to:
A. 10¹⁵ sec
B. 10-¹² sec
C. 10¹² sec
D. 10-¹⁵ sec
10-¹² sec
162 the pressure of 10⁶ dyne cm is equivalent to ______ in SI :
A. 10⁵ Nm-²
B. 10⁴ Nm-²
C. 10⁶ Nm-²
D. 10⁷ Nm-²
10⁵ Nm-²
163 The present international standard of time is:
A. 1/84,400 of means solar day
B. 9192631770 vibrations of Cesium atom
C. 1/60th of minute
D. 1/3156 X 10⁷ of a year
9192631770 vibrations of Cesium atom
164 Which of the following is not a fundamental quantity?
A. Length
B. Temperature
C. Electric charge
D. Current