A small hole of area cross-section 2 m m 2 is present near the bottom of a fully filled open tank of height…

A small hole of area cross-section 2 mm2 is present near the bottom of a fully filled open tank of height 2 m. Taking g=10 m s-2, the rate of flow of water through the open hole would be nearly
  1. 12.6×10-6 m3 s-1
  2. 8.9×10-6 m3 s-1
  3. 2.23×10-6 m3 s-1
  4. 6.4×10-6 m3 s-1

Solution

Velocity of efflux v=2gh
v=2×10×2
=2×10
Rate of flow = area ×v
=2×10-6×2×10
=4×3.14×10-6
≅12.6×10-6 ^

Asked in: NEET 2019 (All India)

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