14. A vessel of area of cross-section A has liquid to a height H. There is a hole at the bottom of vessel having area of cross-section a.
The time taken to decrease the level from H1 to H2 will be
(a) (A/a)(2/g)[√H1– √H2] (b) √2gh
(c) √2gh( H1– H2) (d) (A/a)(g/2)[√H1– √H2]
Answer-a
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a