(a) Define the term “order of magnitude” of a physical quantity. (b) Using suitable…
PHYSICS · Subjective · CBSE · Physics · Units and Measurements · ISC
Problem
(a) Define the term “order of magnitude” of a physical quantity.
(b) Using suitable reasoning, explain why a number written in scientific notation with a coefficient between 1 and 4.9 is assigned the same order of magnitude as 1×10n, whereas a coefficient between 5.0 and 9.9 is assigned the order of magnitude 10n+1.
(c) For the quantity 4.9×107m, state its order of magnitude and justify your choice in one or two sentences.