Q. 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
C) Both are correct
D) None of them is correct
Explanation
Since for 50.14 $cm,$ significant number = 4 and for 0.00025, significant number = 2
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.