46. A large tank is filled with water to a height A small hole is made at the base of the tank. It takes time
T1 to decrease the height of water to H/η (η>1) ; and it takes T2 time to take out the rest of water. If T1 =T2, then the value of η is
(a) 2 (b) 3
(c) 4 (d) 2√2
Answer-c
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a