while performing the experiment to verify the laws of reflection of sound why should we put off the fan ??
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because they could give unwanted results?
i dont think it matters whether the fan is on or offf....but if such type of questions come in the exam, this is what i write
mahipujari:
thankss but can get proper answer of 2 marks
i cant help you with that cause i myself dont know the answer..'
lets see if anyone else knows the answer
ohh that's okay
yaa
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