MCQs are made in such a way that no important aspect is missed out. Any student taking a test and getting more than 90% marks will surely get similar marks in board exam. According to Stoke’s Law, the drag force on a body moving in fluid is directly proportional to the velocity of the body? The product of cross-sectional area of the pipe and the speed at any point along the pipe is constant? Terminal velocity of a body falling in a fluid is the minimum velocity? The speed of efflux is equal to the velocity gained by the fluid in falling through the vertical distance under the action of gravity?
The speed of fluid is directly proportional to its pressure? The aeroplane moves up when the pressure under its wings becomes greater than the pressure above its wings? A two meter high cylinder containing water is hit by four bullets of same caliber at 1? 2m, 1? 8m, 0? 6m and 0? 3m above the ground? The speed of efflux is maximum from? A liquid droplet of radius “r” having a density “ρ” passes through a fluid of viscosity η? Its maximum velocity after some time will be? A two meter high tank is full of water? A hole appears at its middle? What is the speed of efflux? The effect of the decrease in pressure with the increase in speed of the fluid in a horizontal pipe is known as? The drag force on a moving body …………… with the increasing velocity? If each particle of a fluid passing through a point follows the same path, then the flow is called ……………?
If the internal friction force between adjacent layers of fluids is zero, then the fluid is ……? Sphygmomanometer is an instrument used to measure the ………? of human body? The air pressure below the wings of the plane …………? when the speed of air is increased in that region? A meteor burns into ashes when enters into outer atmosphere? Why?A spherical body is dropped in two different fluid and its terminal velocity is found to be different? Give the reasons? A liquid was passed through a pipe and it was found that the rate of influx is equal to the rate of efflux? What information do you get about the liquid?An incompressible liquid is passed through a horizontal pipe and it is observed that the speed of a mass of liquid when emerges is greater than its speed when it enters the pipe? How can it be possible?Why does the pipe of paper squeezes when air is blown through it?