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Quiz Description :
Name: Mechanics – Fundamental and Derived Units
Subject: Physics
Topic: Fundamental and Derived Units
Questions: 15 Objective Type
Time Allowed: 10 Minutes
Important for: IIT JEE, UPSEE, WBJEE Engineering Entrance exams, AIPMT and other PMT entrance test, +2 school students and B. Sc. / M. Sc. College Students.
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 Question 1 of 15
1. Question
1 pointsThe three fundamental quantities are
CorrectWe know that mass, length and time are the fundamental quantities.
They are used to measure the physical quantities in the field of physics.IncorrectWe know that mass, length and time are the fundamental quantities.
They are used to measure the physical quantities in the field of physics.UnattemptedWe know that mass, length and time are the fundamental quantities.
They are used to measure the physical quantities in the field of physics.  Question 2 of 15
2. Question
1 pointsThe Unit of Mass is
CorrectWe know that unit of mass, length and time are the fundamental units. Therefore unit of mass is fundamental unit.
IncorrectWe know that unit of mass, length and time are the fundamental units. Therefore unit of mass is fundamental unit.
UnattemptedWe know that unit of mass, length and time are the fundamental units. Therefore unit of mass is fundamental unit.
 Question 3 of 15
3. Question
1 pointsWhich of the following is not a characteristic of the fundamental units?
CorrectWe know that fundamental units are independent of one another and they are not related to each other by any mathematical relation.
IncorrectWe know that fundamental units are independent of one another and they are not related to each other by any mathematical relation.
UnattemptedWe know that fundamental units are independent of one another and they are not related to each other by any mathematical relation.
 Question 4 of 15
4. Question
1 pointsThe unification of weak and electromagnetic nuclear force interaction was done by
CorrectWe know that Abdus Salam unified weak and electromagnetic nuclear forces interaction. It is seen as an aspect of single electroweak force.
IncorrectWe know that Abdus Salam unified weak and electromagnetic nuclear forces interaction. It is seen as an aspect of single electroweak force.
UnattemptedWe know that Abdus Salam unified weak and electromagnetic nuclear forces interaction. It is seen as an aspect of single electroweak force.
 Question 5 of 15
5. Question
1 pointsThe research in nuclear and atomic physics paved the way for the invention of
CorrectWe know that nuclear bomb was invented after research in nuclear and atomic physics. It is based on nuclear fission.
IncorrectWe know that nuclear bomb was invented after research in nuclear and atomic physics. It is based on nuclear fission.
UnattemptedWe know that nuclear bomb was invented after research in nuclear and atomic physics. It is based on nuclear fission.
 Question 6 of 15
6. Question
1 pointsWhich of the following has a fundamental unit only?
CorrectWe know that fundamental units are independent and they are not related to other units. In this question the unit of force, volume and velocity are derived from fundamental units. But time is a fundamental unit.
IncorrectWe know that fundamental units are independent and they are not related to other units. In this question the unit of force, volume and velocity are derived from fundamental units. But time is a fundamental unit.
UnattemptedWe know that fundamental units are independent and they are not related to other units. In this question the unit of force, volume and velocity are derived from fundamental units. But time is a fundamental unit.
 Question 7 of 15
7. Question
1 pointsWhat is the unit of force?
CorrectWe know that Work = Force × Distance = (Mass × Acceleration) × Distance.
Since acceleration is a derived unit, therefore unit of work is also a derived unit.IncorrectWe know that Work = Force × Distance = (Mass × Acceleration) × Distance.
Since acceleration is a derived unit, therefore unit of work is also a derived unit.UnattemptedWe know that Work = Force × Distance = (Mass × Acceleration) × Distance.
Since acceleration is a derived unit, therefore unit of work is also a derived unit.  Question 8 of 15
8. Question
1 pointsWhat is the unit of acceleration?
CorrectWe know that acceleration = Velocity × Time
Since velocity is a derived unit; therefore unit of acceleration is also a derived unit.IncorrectWe know that acceleration = Velocity × Time
Since velocity is a derived unit; therefore unit of acceleration is also a derived unit.UnattemptedWe know that acceleration = Velocity × Time
Since velocity is a derived unit; therefore unit of acceleration is also a derived unit.  Question 9 of 15
9. Question
1 pointsWhich of the following has a derived unit?
CorrectWe know that the units of physical quantities which can be expressed in terms of fundamental units are called derived units.
Mass, time and length have fundamental units. But area has derived unit.IncorrectWe know that the units of physical quantities which can be expressed in terms of fundamental units are called derived units.
Mass, time and length have fundamental units. But area has derived unit.UnattemptedWe know that the units of physical quantities which can be expressed in terms of fundamental units are called derived units.
Mass, time and length have fundamental units. But area has derived unit.  Question 10 of 15
10. Question
1 pointsWhich of the following has a derived unit?
CorrectWe know that the units of physical quantities which can be expressed in terms of fundamental units are called derived units.
Mass, time and length have fundamental units. But volume has derived unit.IncorrectWe know that the units of physical quantities which can be expressed in terms of fundamental units are called derived units.
Mass, time and length have fundamental units. But volume has derived unit.UnattemptedWe know that the units of physical quantities which can be expressed in terms of fundamental units are called derived units.
Mass, time and length have fundamental units. But volume has derived unit.  Question 11 of 15
11. Question
1 pointsThe term strain contains
CorrectWe know that strain = [Extension in length / Original length]
i.e. = [L / L] = L^{0}
Therefore the terms strain has no unit.IncorrectWe know that strain = [Extension in length / Original length]
i.e. = [L / L] = L^{0}
Therefore the terms strain has no unit.UnattemptedWe know that strain = [Extension in length / Original length]
i.e. = [L / L] = L^{0}
Therefore the terms strain has no unit.  Question 12 of 15
12. Question
1 pointsWhat is the unit of work?
CorrectWe know that the work = force × Distance = (Mass × Acceleration) × Distance.
Since acceleration is a derived unit, therefore unit of work is also a derived unit.IncorrectWe know that the work = force × Distance = (Mass × Acceleration) × Distance.
Since acceleration is a derived unit, therefore unit of work is also a derived unit.UnattemptedWe know that the work = force × Distance = (Mass × Acceleration) × Distance.
Since acceleration is a derived unit, therefore unit of work is also a derived unit.  Question 13 of 15
13. Question
1 pointsA micron is related to the centimeter as
CorrectWe know that 1 micron = 10^{6} cm.
IncorrectWe know that 1 micron = 10^{6} cm.
UnattemptedWe know that 1 micron = 10^{6} cm.
 Question 14 of 15
14. Question
1 pointsOut of the following is the only scalar quantity.
CorrectWe know that Electric current is the scalar quantity only from the above list.
IncorrectWe know that Electric current is the scalar quantity only from the above list.
UnattemptedWe know that Electric current is the scalar quantity only from the above list.
 Question 15 of 15
15. Question
1 pointsThe symbol ‘nm’ stands for
CorrectWe know that Newton is denoted by ‘N’ so ‘n’ represent to Nano, So ‘nm’ denotes Nanometer.
IncorrectWe know that Newton is denoted by ‘N’ so ‘n’ represent to Nano, So ‘nm’ denotes Nanometer.
UnattemptedWe know that Newton is denoted by ‘N’ so ‘n’ represent to Nano, So ‘nm’ denotes Nanometer.