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An open U-tube of uniform cross -section contains mercury. When $27.2 c m$ of water is poured into one limb of the tube, then the difference in levels of liquids of the two sides is ( $ρ_{w a t e r} = 1 g m / c m^{3}$ and $ρ_{H g} = 13.6 g m / c m^{3}$ )

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23.2 cm

25.2 cm

21.2 cm

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detailed solution

Correct option is B

27.2×1×g=h×13.6×g h=2 cm ∴ difference =27.2–2 =25.2 cm

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An open U-tube of uniform cross -section contains mercury. When 27.2 cm of water is poured into one limb of the tube, then the difference in levels of liquids of the two sides is (ρwater=1 gm/cm3 and ρHg=13.6 gm/cm3 )

Remember concepts with our Masterclasses.

Ready to Test Your Skills?

free study material

An open U-tube of uniform cross -section contains mercury. When $27.2 c m$ of water is poured into one limb of the tube, then the difference in levels of liquids of the two sides is ( $ρ_{w a t e r} = 1 g m / c m^{3}$ and $ρ_{H g} = 13.6 g m / c m^{3}$ )