Question

What is the number of significant figures in each of the following ?
(i) Mass of electron `= 9.108 xx 10^(-31) kg`
(ii) Mass of proton `= 1.672 xx 10^(-27) kg`
(iii) `0.00564`.

Answer 1

`{:("(i)","Mass of electron ="9.108xx10^(-31)"kg.","(Four significant figures)"),("(ii)","Mass of proton ="1.672xx10^(-27)"kg","(Four significant figures)"),("(iii)",0.00564,"(Three significant figures)"):}`