When the metal terminal of a gold-leaf electroscope is touched with a charged object,

the gold leaves spread apart in a 'V'.

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the gold leaves close together.

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the gold leaves remain unaffected.

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None of these

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Solution

The correct option is A the gold leaves spread apart in a 'V'.
When a charged body is touched with the metallic disc of the electroscope, the charge is transferred to the gold leaf through the metallic rod. Both halves of the gold leaf acquires the same type of charge so they repel each other and hence gold leaf is seen to diverge.

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