When you run with the firki in your hand or blow air on it, the firki rotates. This rotation is caused by the wind. Class 6 Science NCERT Chapter 11 Chapter 11 Nature’s Treasures
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When you run with the firki in your hand or blow air on it, the firki rotates. This rotation is caused by the wind. Class 6 Science NCERT Chapter 11 Chapter 11 Nature’s Treasures