wat is meant by estimation of a physical quantity by its order of magnitude? give 1 example

Hi!

Basavaraj,this my answer for your question.

your question:what is meant by estimation of a physical quantity by its order of magnitude?give 1 example.

my answer:By expressing the quantity in powers of ten,we can easily estimate the order of magnitude of that quantity.Therefore,a physical quantity having a large number of digits is expressed in powers of ten with one digit to the left of decimal as under:

example:In a room of dimensions 3.2m X 4.5m X 3.7m,the volume of air is 53.28m3=5.328 X 10¹m³,so the order of magnitude of volume of air in the room will be 10¹m³(since the numerical value 5.328 is greater than 3.2,so the power of ten will increase by 1, i.e.5.328 X 10¹⁺¹m³=5.328 X10²m³).