Subject :NSO Class : Class 8
Class : Class 7
I think the question is talking about friction so look for the points which are related to both heat and friction
Class : Class 7
the answer is B because fire is caused due to friction not because it gives ot heat and light energy. Sof , could you please clear my doubt
Class : Class 5
On rubbing two sticks together, friction produces heat and this leads to warming until the ignition point of the substance, when it catches fire. As per the options, onrubbing two sticks, *FIRE*produces heat and light and this *PRODUCES FIRE*.
Subject :NSO Class : Class 4
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Subject :NSO Class : Class 3
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Class : Class 7
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