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Textbook Exercise Questions
The number of base units in SI are:
Which one of the following unit is not a derived unit?
Amount of a substance in terms of numbers is measured in:
An interval of 200 µs is equivalent to:
Which one of the following is the smallest quantity?
Which instrument is most suitable to measure the internal diameter of a test tube?
A student claimed the diameter of a wire as 1.032 cm using vernier calipers. To what extent do you agree with it?
A measuring cylinder is used to measure:
A student noted the thickness of a grass sheet using a scale. It reads 3 divisions while an 8th division on the index line. Its thickness is:
Significant figures in an expression are:
Identify the base quantity in the following:
What is the difference between base quantities and derived quantities? Give three examples in each case.
Pick out the base units in the following: Joule, Newton, kilogram, hertz, mole, ampere, meter, Kelvin, coulomb and watt.
Find the base quantities involved in each of the following derived quantities:
Estimate your age in seconds.
What role SI units have played in the development of science?
What is meant by vernier constant?
What do you understand by the zero error of a measuring instrument?
Why is the use of zero error necessary in a measuring instrument?
What is a stopwatch? What is the least count of a mechanical stopwatch you have used in the laboratories?
Why do we need to measure extremely small intervals of time?
What is meant by significant figures of a measurement?
How is precision related to the significant figures in a measured quantity?