Physics

In the context of accuracy to measurement and significant figures in expressing results of experiment, which of the following is/are correct?
(1) Out of the 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 traveled is 478 km.


ANSWER

Both are correct


SOLUTION
Since for $$50.14cm$$
Now, the significant number$$=4$$
and for$$0.00025$$
Significant number $$=2$$
Both are correct
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