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An inflated balloon is rubbed with a woollen cloth and in another case, a ballpen refill is rubbed with polythene. When they are brought closer, it is observed that they attract each other. Which of the following conclusions can be made from this? |
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Answer» An inflated balloon is rubbed with a woollen cloth and in another case, a ballpen refill is rubbed with polythene. When they are brought closer, it is observed that they attract each other. Which of the following conclusions can be made from this? |
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