SSC
PHYSICS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
a reading
|
|
|
A unit or system of measuring. The size, length, or amount of something, as established by measuring
|
|
|
an observation of a size of something
|
|
|
a estimate without a unit of measurement of what the size of something is
|
Detailed explanation-1: -Since the metric system is almost universally used, it is often referred to as the International System of Units and abbreviated SI. The basic units for length or distance measurements in the English system are the inch, foot, yard, and mile. Other units of length also include the rod, furlong, and chain.
Detailed explanation-2: -The units of all other physical quantities can be expressed as combinations of the base units. Such units obtained for the derived quantities are called derived units. A complete set of these units, both the base units and derived units, is known as the system of units. 2.2 THE INTERNATIONAL SYSTEM OF UNITS.
Detailed explanation-3: -Measurement is a comparison of an unknown quantity with a known fixed quantity of the same kind. The value obtained on measuring a quantity is called its magnitude. Magnitude of a quantity is expressed as numbers in its units.