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Two liquids L1 and L2 are contained in a U - tube. The height and...

Physics
JAMB 2005
Two liquids L1 and L2 are contained in a U - tube. The height and the density of L1 are 8 cm and 103 kgm-3 respectively. If the density of L2 is 800 kgm-3, its height measured from the same level is
  • A. 8 cm
  • B. 10 cm
  • C. 16 cm
  • D. 12 cm
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Correct Answer: Option B
Explanation
Generally, from Hares Experiment, density is inversely proportional to height
i.e h ∝1/d; → h1d1 = h2d2
∴ 8 x 103 = h2 x 800
∴ h2 = 8 x 103
_800

= 10cm

There is an explanation video available below.

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Explanation Video

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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts