Two small conducting sphere of equal radius have P charges \( +10 \mu C \) and \( -20 \mu C \) r...

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Two small conducting sphere of equal radius have
P charges \( +10 \mu C \) and \( -20 \mu C \) respectively and

W placed at a distance \( R \) from each other experience force \( F_{1} \). If they are brought in contact and separated to the same distance, they experience force \( F_{2} \). The ratio of \( F_{1} \) to \( F_{2} \) is
(A) \( 1: 2 \)
(B) \( -8: 1 \)
(C) \( 1: 8 \)
(D) \( -2: 1 \)
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