Question

Five balls numbered 1,2,3,4,5 are suspended using separate threads. The balls (1,2), (2,4) and (4,1) show electrostatic attraction, while (2,3) and (4,5) shows repulsion. Therefore, ball 1 must be
a)negatively charged
b)positively charged
c)neutral
d)made of metal

Answer 1

If ball 1 is neutral, ball2 may be +, ball 3 may be +, ball 4 may be negative and ball 5 may be negative. This would satisfy the conditions of the question.

So, (C)Neutral is the correct answer

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Answer 2

Explanation:

Here is the answer with explanation......

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