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Q.

The friction between the door hinges will be [[1]] if we apply oil to them.


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Detailed Solution

The friction between the door hinges will be reduced if we apply oil to them.
Lubrication reduces friction between two surfaces. As a result, adding oil reduces friction. Similarly, the wear and tear of door hinges in houses cause creaking sounds, for which we apply oil to the hinges to ensure smooth door operation.
 
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