JEE 2020 Physics: Mechanical Properties of Fluids Quiz 1 (15.08.2019) for JEE & BITSAT Exams

Question 1

Select the correct option.
Statement-1: Aeroplanes always fly at low altitudes
Statement-2: According to Newton’s third law of motion, for every action there is an equal and opposite reaction

Question 2

The flow of blood in a large artery of an anesthetised dog is diverted through a venturimeter. The wider part of the meter has a cross-sectional are equal to that of the artery

. The narrower part has an area

. The pressure drop in the artery is

. Density of the blood is

. The speed of blood in the artery is

Question 3

The effective weight of an object immersed in water is ____ with respect to original weight

Question 4

An open cubical tank was initially fully filled with water. When the tank was accelerated on a horizontal plane along one of its side it was found that one third of volume of water spilled out. The acceleration was

Question 5

A U-tube having horizontal arm of length 20 cm, has uniform cross-sectional area = 1 cm². It is filled with water of volume 60 cc. What volume of a liquid of density 4 g/cc should be poured from one side into the U-tube so that no water is left in the horizontal arm of the tube?

Question 6

A long glass capillary tube is dipped in water. It is known that water wets glass. The water level rises by h in the tube. The tube is now pushed down so that only a length h/2 is outside the water surface. The angle of contact at the water surface at the upper end of the tube will be

Question 7

A 10 cm long wire is placed horizontally on the surface of water and is gently pulled up with a force of 2 x 10^-2 N. To keep the wire in equilibrium, the surface tension of water in Nm^-1 is

Question 8

An aeroplane executes a horizontal loop at a speed of 720 kmph with its wings banked at 45 º. What is the radius of the loop?
Take g = 10 m s^-2

Question 9

A smooth spherical ball of radius 1 cm and density 4 × 10³ kg/m³, is dropped gently in a large container containing viscous liquid of density 2 × 10³ kg/m³, η = 0.1 N-s/m². The distance moved by the ball in t = 0.1 sec after it attains terminal velocity is

Question 10

A viscous liquid flow through a uniform tube. As we move from the axis of the tube towards its wall, the speed of the liquid relative to the tube