Question

please fast class 11​

Answer 1

A physical quantity is any phenomenon that can be measured with an instrument or be calculated for. A physical quantity can be expressed as a value, which is the algebraic multiplication of a numerical value and a unit.

MEASUREMENT" is the determination of the size or magnitude of something. By comparing that unknown quantity with some standard quantity of equal nature, known as measurement unit. Measurement can also be defined as "Comparison of an unknown quantity with some known quantity of the same kind"

Unit-Unit is the standard assigned to measure physical quantity. ... Length, mass, time, tempera- ture, luminous intensity and the electric current are known as the fundamental quantities. These are represen- ted by L, M, T, 0, Cd and A respectively.

Answer 2

Explanation:

physical quantity :- A physical quantity is any quantity which can be measured .

example :- length

measurement :- measurement is defined as the process of obtaining a Quantative comparison between a predefined standard and an unknown magnitude

unit :- the standard measure of each kind of physical quantity is called unit

Type :- fundamental unit and derived unit