In some pencil boxes, the lid fits tightly when we close it even without a locking arrangement. Why does it happen so?
Asked by Topperlearning User | 4th Jun, 2014, 01:23: PM
Expert Answer:
In some pencil boxes, the lid fits tightly when we close it even without a locking arrangement because such pencil boxes have magnets fitted inside them.
Answered by | 4th Jun, 2014, 03:23: PM
Concept Videos
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