GENERAL KNOWLEDGE

GK

PHYSICS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
it is made up of a number and unit.
A
measurement
B
metric system
C
basic units
D
unit prefixes
Explanation: 

Detailed explanation-1: -Answer. Answer: Every measurement consists of a number and a unit. For example: if the length of table is 2 meters, then 2 is the number and meter is the unit.

Detailed explanation-2: -Number and unit of measurement The property of the thing being measured is given as a number of units of measure. The number only has sense when the unit of measurement is also given. By that number it represents a measurement of something. For example, The Eiffel Tower in Paris, France is 300 metres (980 feet) tall.

Detailed explanation-3: -A unit of measurement is a definite magnitude of a quantity, defined and adopted by convention or by law, that is used as a standard for measurement of the same kind of quantity. Any other quantity of that kind can be expressed as a multiple of the unit of measurement.

Detailed explanation-4: -Measurements most commonly use the International System of Units (SI) as a comparison framework. The system defines seven fundamental units: kilogram, metre, candela, second, ampere, kelvin, and mole. All of these units are defined without reference to a particular physical object which serves as a standard.

Detailed explanation-5: -UNITS AND MEASUREMENT. 2.1 INTRODUCTION Measurement of any physical quantity involves comparison with a certain basic, arbitrarily chosen, internationally accepted reference standard called unit. The result of a measurement of a physical quantity is expressed by a number (or numerical measure) accompanied by a unit.

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