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Properties of Matter question

2019 · Q114
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Properties of Matter question

2019 · Q114

NEETPhysicsProperties of MatterMCQ+4 / −1
A small hole of area of cross-section 2 mm2 present near the bottom of a fully filled open tank of height 2 m. Taking g = 10 m/s2, the rate of flow of water through the open hole would be nearly :
  1. A
    8.9 × 10–6 m3/s
  2. B
    2.23 × 10–6 m3/s
  3. C
    6.4 × 10–6 m3/s
  4. D
    12.6 × 10–6 m3/s
View written solutionFree

Correct answer: D

volume flow rate = Av = A2gh\sqrt {2gh} 2gh​

= 2 ×\times× 10-6 ×\times× 2×10×2\sqrt {2 \times 10 \times 2} 2×10×2​

= 2 ×\times× 2 ×\times× 3.14 ×\times× 10-6 m3/s

= 12.56 ×\times× 10-6 m3/s

= 12.6 ×\times× 10-6 m3/s

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