PUMPA - SMART LEARNING

எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

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I) Amir mistakenly put some glittering powder inside a water bath under heating. Later, he observed that there is a circular flow inside the water bath. The glittering powder is circulating up and down. Which phenomenon is responsible for this circulation?
 
 
II) In a sports day circular, it is instructed not to wear black jerseys for the players. What is the reason for the instruction?