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JEE 2020 Physics: Mechanical Properties of Fluids Quiz 2 (19.08.2019)
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Question 1
In the Ramesh’s farmhouse during sprinkling he sees that the water containing air bubbles flows without turbulence through a horizontal pipe which has a region of narrow cross-section. In this region the bubbles
(I) Move with greater speed and are smaller than in the rest of the pipe
(II) Move with greater speed and are larger in size than in the rest of the pipe
(III) Move with lesser speed and are smaller than in the rest of the pipe
(IV) Move with lesser speed and are of the same size as in the rest of the pipe
(I) Move with greater speed and are smaller than in the rest of the pipe
(II) Move with greater speed and are larger in size than in the rest of the pipe
(III) Move with lesser speed and are smaller than in the rest of the pipe
(IV) Move with lesser speed and are of the same size as in the rest of the pipe
Question 2
The level of water in tank is 
high. A hole of area 
is made in the bottom of tank. The rate of leakage of water from the hole is
. So what will be the value of h (Take
)
high. A hole of area is made in the bottom of tank. The rate of leakage of water from the hole is. So what will be the value of h (Take) Question 3
A uniform rod of density 
is placed in a wide tank containing a liquid of density 
. The depth of liquid in the tank is half the length of the rod. The rod is in equilibrium, with its lower end resting on the bottom of the tank. In this position the rod makes an angle 
with the horizontal
is placed in a wide tank containing a liquid of density . The depth of liquid in the tank is half the length of the rod. The rod is in equilibrium, with its lower end resting on the bottom of the tank. In this position the rod makes an angle with the horizontalQuestion 4
A cylinder of radius r = 1 m and height 3 m filled with a liquid upto 2 m high and is rotated about its vertical axis as shown in the Figure.
The speed of rotation of the cylinder when the point at the centre of the base is just exposed is
The speed of rotation of the cylinder when the point at the centre of the base is just exposed is
Question 5
A beaker containing a liquid of density ρ moves up with an acceleration a. The pressure due to the liquid at a depth h below the free surface of the liquid is
Question 6
A 20 cm long capillary tube is dipped vertically in water and the liquid rises upto 10 cm. If the entire system is kept in a freely falling platform, the length of water column in the tube will be
Question 7
Consider a liquid contained in a glass container. The adhesive force is very weak as compared to the cohesive force in the liquid. The shape of the liquid surface near the glass surface shall be–
Question 8
The velocity of water in a river is 18 km/hr near the surface. If the river is 5 m deep, find the shearing stress between the horizontal layers of water. The co-efficient of viscosity of water 
poise.
poise.Question 9
If it takes 5 minutes to fill a 15 litre bucket from a water tap of diameter 
cm then the Reynolds number for the flow is (density of water=103 kg/m3 and viscosity of water =10-3 Pa.s close to: 
cm then the Reynolds number for the flow is (density of water=103 kg/m3 and viscosity of water =10-3 Pa.s close to: Question 10
A ball of radius r and density ρ falls freely under gravity through a distance h before entering water. Velocity of ball does not change even on entering water. If viscosity of water is η, the value of h is given by –
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Aug 26JEE & BITSAT
