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10-04-2024
Physics

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Five balls numbered 1 to 5 are suspended using separate threads. Pairs (1, 2) , (2, 4) and (4, 1) show electrostatic attraction, while pair (2, 3) and (4, 5) show repulsion. Therefore ball 1 must be
A. Positively charged
B. Negatively charged
C. Neutral
D. Made of metal

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