The area of cross-section of one limb of an U-tube is twice that of the other. Both the limbs contain mercury at the same level. Water is poured in the wider tube so that mercury level in it goes down by 1 cm. The height of water column is (density of water =10³ kg m⁻³, density of mercury=13.6×10⁻³ kg m⁻³)

Options

(a) 13.6 cm
(b) 40.8 cm
(c) 27.2 cm
(d) 54.4 cm

Correct Answer:

40.8 cm

Explanation:

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