True or False: Measurement of a physical quantity involves assigning a value by comparing it with an arbitrary unit.

False; it involves comparing it with a standard or calibrated unit.

The difference between the true value and the measured value of a quantity is known as ___ error.

Absolute

What is the formula for calculating percentage error in measurement?

Percentage error is calculated as (Relative error × 100).

True or False: There are four main types of measurement errors.

False; there are three main types of measurement errors.

The four main systems of units used for measuring physical quantities include CGS, FPS, MKS, and ___.

SI (International System of Units)

True or False: The SI system was adopted in 1971 by the Conference of Weights and Measures held in Geneva.

True

Fill in the blank: The unit of plane angle is called a ___.

Radian

What are derived quantities and give three examples?

Derived quantities are those obtained from fundamental quantities, and examples include velocity, force, and density.

True or False: The SI unit of length is the yard.

False - The SI unit of length is the metre.

The SI unit of mass is the ___ and it is defined as the mass of 5.0188 × 10^25 atoms of carbon-12.

Kilogram

True or False: One liter is equivalent to 100 centilitres.

True

The SI unit of time is defined as 1/86,400 of a mean solar day, known as the ___.

Second

Fill in the blank: 1 barrel is equal to ___ litres.

159

What is the relationship between volume and length in terms of units?

Volume is related to the cube of length.