UPSC NDA II 2011 General Ability Paper

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Question : 97 of 150

Marks: +1, -0

A neutral (unchanged) metal ball is suspended using a non-magnetic string. A positively charged insulating rod is placed near the ball which is observed to be attracted to the rod. This is because

the ball becomes positively charged by induction
the ball becomes negatively charged by induction
there is a rearrangement of the electrons in the ball
the number of electrons in the ball is more than the number of electrons on the rod

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