Q2... A vessel whose bottom..... Leakage is..
Q2... A vessel whose bottom..... Leakage is.. EXERCISE - 3(A)
The amount of work done in blowi
Mechanical Properties of Fluids
REVIEW EXERCISE
z.
3.
6.
7.
9.
tension of the solution)
ng a soap bubble such that its diameter increases from d to D is surface
A vessel, whose bottom has round holes ofO.lmm. is filled With water The maximum height to
which the water can be filled without leakage is (ST. of water -75 g z 1000
(3) 50 cm
(4) 30 cm
Two bodies are in equilibrium when suspended in water from the arms of a balance. The mass of one
body 36 g and its density iS 9 g,'cm3. If the mass of the other 48 g, its density in g / crn3
An inverted bell lying at the bottom of a lake 47.6 m deep has 50 of air trapped in it. The bell
iS brought to the surface of the lake. The volume of the trapped air Will be (atmospheric pressure z
70 Cm Of Hg and density Of Hg = 13.6 g/cm3)
(1) 350
(2) 300 crna
(3) 250
(4) 22 cm3
Water rises to a height of 30 mm in a capillary tube. If the radius of the capillary tube is made (3/4)th
Of its previous value, the height to which the water will rise in the tube is-
(1) 30 mm
(2) 20 mm
(3) 40 mm
(4) 10 mm
Water rises in a capillary upto a height of 4 cm. If it is tilted to 300 from the vertical, then the length
of water column in it will be-
8
(1) Qäcm
(2) VÄ/3 cm
A rectangular film Of a certain liquid is 5 Crns long and 3 cms is breadth. If the amount Of work done
in increasing its size to 6 cm x 5 Crns is 3 x IO•4J then the value Of surface tension of the liquid is-
(2) 0.1 J/m2
(3) 3 x J/m2
(4) 5 x 10-4 J/m2
(1) 0.4 J/m2
A thin Wire ring Of radius Of 2m is placed on the surface a liquid. If a force of 4N is required to pull
this ring from the surface Of liquid (before the liquid film breaks) then the surface tension of liquid is
(3) 16t
(2) 2Nm
1000 drops of water, all of same size join together to form a single drop and the energy released raises
the temperature of the drop. Given that T is the surface tension of water, r the radius of each small drop,
p the density of liquid, J the mechanical equivalent of heat. What is the rise in temperature-
(4) None of the above
(1)T/Jr '
(2) 10 T/Jr
10. concrete sphere of radius R has a cavity of radius r (pack with sawdust). The specific gravities of
concrete and sawdust are respectively 2.4 and 0B. For this sphere to float with its entire volume
submerged under water. the ratio of mass of concrete to mass of sawdust Will be :
(4) zero
(1)8
done informmg a soap bubble of R is W Then workdone is forming a soap bubble of radius
11.
'28' Will be
of two limbs are 0.5 cm and tube has rued water
In .72
(4) r•bne of these
(2) 025
tension of which of the following liquid is maximum
2019/2/18
(3) cHPH