Question

The ratio of time for completely emptying the hemispherical tank and
circular horizontal tank of equal radii both fitted with similar
orifices at their bottoms is :
Options:
A .  `pi/3[ ((4//3)RH_1^(3//2) - 2//5 H^(5//2))/((2R)^(3//2) - (2R - H_1)^(3//2))]`
B .  `pi/2[ ((2//5)RH_1^(5//2) - 2//3 H^(3//2))/((3R)^(3//2) - (2R +H_1)^(3//2))]`
C .  `pi/3[ ((4//3)RH_1^(3//2) + 2//5 H^(5//2))/((R)^(3//2) - (2R +H_1)^(3//2))]`
D .  `pi [ ((2//3)RH_1^(3//2) + 2//5 H^(2//5))/((R)^(3//4) +(4R +H_1)^(3//2))]`
Answer: Option A



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