Question

What is physical quantity​

Answer 1

physical quantity is a property of a material or system that can be qualified by measurement

Answer 2

`\huge\mathfrak{ANSWER}`

the quantities by meals of which we describe the law of physics are known as physical quantities.

in order to measure a physical quantity we as you my certain magnitude of this quantity a standard and call its unit of that quantity to express the measurement of any physical quantity two thing must be mentioned.

• the unit in which the quantity is measured.
• the numerical value which do not the magnitude of that quantity in term of the choosen unit.

For Example -:

• when we say that the length of a road is 20 m its mean that the unit of length is matter and the length of rod 20 time magnitude of metre.
• in other number the numerical value of physical quantities inversely proportional to its unit if N1 and N2 be the numerical value of a physical quantity into different unit u1 and u2 then

`\bold{ n_1 (u_1) = n_2(u_2)}`