18 Questions
What is the SI unit for the fundamental quantity of length?
metre
Which of the following is a derived unit in the SI system?
velocity
What is the SI unit for the fundamental quantity of electric current?
ampere
Which of the following is a supplementary unit in the SI system?
plane angle
The SI unit of momentum is expressed in terms of which fundamental units?
kg·m/s
What is the relationship between radians and degrees for a plane angle?
1 radian = 180 degrees
Which system of units was recommended by the 14th International general conference on weights and measures in 1971?
SI
What are the seven fundamental quantities of measurement?
Length, mass, time, temperature, electric charge, luminous intensity, amount of substance
What was the main reason for recommending the SI system of units over the CGS, MKS, and FPS systems?
Ease of conversion within the system
What does SI stand for in the context of units of measurement?
System International
Which physical quantity is measured in Kelvins (K)?
Temperature
What determines a fundamental quantity?
Does not depend on any other physical quantity
What is the primary purpose of using standard units in measurement?
To allow for easy comparison of measurements
Which of the following is NOT a unit commonly used in a physics laboratory?
Pound
According to the passage, which of the following statements about the relationship between a measured quantity and its unit is true?
The measured quantity is always followed by the corresponding unit.
Which of the following is an example of a physical quantity that would be measured using standard units?
The temperature of a room
Which of the following is not a reason why standard units are used in measurement?
To ensure accuracy of measurements
Which of the following statements about units and measurements is true?
Measurements always involve a comparison to a standard unit
Learn about different systems of units used in physics, including CGS, MKS, FPS, and SI. Understand the standard measures for length (m), time (s), mass (kg), and more.
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