In the context of accuracy of measurement and significant figures in expressing results of experiment, which of the following is/are correct
$(1)$ Out of the two measurements $50.14 \,cm$ and $0.00025$ ampere, the first one has greater accuracy
$(2)$ If one travels $478\, km$ by rail and $397\, m$. by road, the total distance travelled is $478\, km.$
In the context of accuracy of measurement and significant figures in expressing results of experiment, which of the following is/are correct
$(1)$ Out of the two measurements $50.14 \,cm$ and $0.00025$ ampere, the first one has greater accuracy
$(2)$ If one travels $478\, km$ by rail and $397\, m$. by road, the total distance travelled is $478\, km.$
Only $(1)$ is correct
Only $(2)$ is correct
Both are correct
None of them is correct.
In the context of accuracy of measurement and significant figures in expressing results of experiment, which of the following is/are correct
$(1)$ Out of the two measurements $50.14 \,cm$ and $0.00025$ ampere, the first one has greater accuracy
$(2)$ If one travels $478\, km$ by rail and $397\, m$. by road, the total distance travelled is $478\, km.$
Since for $50.14\, cm$, significant number $= 4 $ and for $0.00025$, significant numbers $= 2$