PUMPA - SMART LEARNING
எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்
Book Free DemoExplain the following observations very briefly.
A firki does not rotate in a closed area.
A firki rotates when it is held in an area. It rotates the direction of the wind. But in the closed area, the movement of air is and does not support the rotation of a firki. Hence, a firki does not rotate in a closed area.
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