1.

A liquid X of density 3.36g/cm3 is poured in a U-tube, whichcontains Hg. Another liquid Y is poured in left arm withheight 8 cm, upper levels of X and Y are same. What isdensity ofY(a) 0.3 g/cc(b) 1.2 g/cc(c) 1.4 g/co(d) 1.6 g/cc[BHU 2006]2V10cm

Answer»

The height of X should also be given

it is 10cm there

now balance the pressur below 10cm from the top in both limbs of the u tube

you will get the following equation

d= density

dx* g * Hx= dy* g * Hy+ dmercury* g * Hmercury

as we are equating pressure below 10 cm from the top

8cm will be of y and 2 cm of mercury in left limb

thereforeHmercury= 2cm

also dmercury=13.6 gm/cm3

3.36 * 10 = dy* 8 + 13.6*2

dy=0.8 gm/cm3



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