A liquid flows through a pipe of varying diameter. The velocity of the liquid is \( 2 \mathrm{~m...

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A liquid flows through a pipe of varying diameter. The velocity of the liquid is \( 2 \mathrm{~ms}^{-1} \) at a point, where the diameter is \( 6 \mathrm{~cm} \). The velocity of the liquid at a point, where the diameter is \( 3 \mathrm{~cm} \) will be
(a) \( 1 \mathrm{~ms}^{-1} \)
(b) \( 4 \mathrm{~ms}^{-1} \)
(c) \( 8 \mathrm{~ms}^{-1} \)
(d) \( 16 \mathrm{~ms}^{-1} \)
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