Question
Question: When time as shown by a standard watch is 10:25:15AM, two watches A and B are showing times 10:29:37...
When time as shown by a standard watch is 10:25:15AM, two watches A and B are showing times 10:29:37 AM and 10:25 AM respectively. It can be concluded that comparatively:
A
Watch A is accurate and watch B is precise.
B
Watch A is precise and watch B is accurate.
C
Watch A is precise as well as accurate.
D
Watch B is precise as well as accurate.
Answer
Watch A is precise and watch B is accurate.
Explanation
Solution
An accurate measurement is very close to actual value. An instrument with lower least count is more precise and a precise measurement uses more number of significant figures. Clock B is not precise as it is not showing seconds measurement but it is accurate. A high quality measurement is both precise and accurate.