In the context of accuracy of measurement and significant figures… - Vidyadip

MCQ

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 $478\, km.$

A
Only $(1)$ is correct
B
Only $(2)$ is correct
✓
Both are correct
D
None of them is correct.

✓

Answer

Correct option: C.

Both are correct

c
Since for $50.14\, cm$, significant number $= 4 $ and for $0.00025$, significant numbers $= 2$

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