alleryWhy should a compass be held on a level surface?
AThe needle may rub the casing
BThe needle would melt
CGravity would reverse it
DLight would disturb it
Answer & Solution
Correct answer: A. The needle may rub the casing
1. The needle must swing freely to find magnetic north.
2. If tilted, it may touch the casing and stick.
3. That gives a faulty reading.
_Source: Wikipedia, Compass, Use_
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