21. The pressure at the bottom of a water tank is 4P , where P is atmospheric pressure . If water drawn out till the water level decreses by 3/5th , then pressure at the bottom of the tank is (i) 3P/8 (ii) 7P/6 (iii) 11P/5 (iv) 9P/4 Share with your friends Share 8 Pintu B. answered this Dear Student , Let us take that height of the tank is h . So , 4P-P=hρg⇒3P=hρgThen we can take that the height rediuces to 35hSo now the height is =h-35h=25hTherefore ,P'-P=25hρg⇒P'=P+6P5=11P5 Regards 43 View Full Answer
