In the context of accuracy of measurement and significant figures in expressing results of experiment, which of the following is/are correct :
- Out of the two measurement 50.14 cm and 0.00025 ampere, the first one has greater accuracy.
- If one travels 478 km by rail and 397 m by road, the total distance travelled is 478 km.
Answer & explanation
Correct answer: option 3
Since for 50.14 cm, significant number = 4 and for 0.000025 significant numbers = 2