A soap bubble is given a negative charge, then its radius
A soap bubble is given a negative charge, then its radius
- A
Decreases
- B
Increases
- C
Remains unchanged
- D
Nothing can be predicted as information is insufficient
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- [AIIMS 1998]
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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
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