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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

(4)

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