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Revision Quiz | Properties of Solids and Liquids

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Question 1

At the top of building there are two holes and in a tank of height that supply water to all the residence. The water emerging from and strikes the ground at the same points, as shown in figure. Then

Question 2

Select the correct option.
Statement-1: Aeroplanes are made to run on the runway before take-off, so that they acquire the necessary lift.
Statement-2: According to Bernoulli’s theorem as velocity increases pressure decreases and vice-versa.

Question 3

An ideal fluid is flowing in a hose with a velocity of 2.5 m/s and a pressure of 293563 Pa. At the nozzle the pressure decreases to atmospheric pressure (124363 Pa), there is no change in height. What will be the velocity of fluid? (Density of fluid is and gravity g is)

Question 4

A pitot is mounted along the axis of a gas pipeline whose cross-sectional area is equal to . Assuming the viscosity to be negligible. Find the volume of gas flowing across the cross-section of the pipe per unit, if the difference in the liquid columns is equal to, and the densities of the liquid and the gas are and respectively.

Question 5

In a restaurant of New York in washroom water emerges from a tap of cross sectional area is vertically downward with an initial speed of. Assume that the pressure is constant through that the flow is steady, the cross sectional area of steam below the tap is (Take)

Question 6

A wire of length L and radius r is fixed at one end. When a stretching force F is applied on the free end, the extension in the wire is η. Another wire of length 2L and radius 2r and of the same material is also fixed at one end. If a stretching force 2F is applied on the other end, then the elongation in the length of the wire will be -

Question 7

A slender homogeneous rod of length 2L floats partly immersed in water, being supported by a string fastened to one of its ends, as shown. The specific gravity of the rod is 0.75. The length of rod that extends out of water is –

Question 8

Suppose a electrician stretch a wire then the work done in stretching wire by is , the work (in Joule) necessary for stretching another wire of same material but with double radius of cross-section and half the length by is

Question 9

One end of a slack wire (Young's modulus Y, length L and cross-section area A) is clamped to rigid wall and the other end to a block (mass m) which rests on a smooth horizontal plane. The block is set in motion with a speed v. What is the maximum distance the block will travel after the wire becomes taut?

Question 10

A metal wire of length is suspended vertically from a rigid support. When a body of mass is attached to the lower end of wire, the elongation of the wire is.

Question 11

Two solods P and Q float in water. It is observed yjat P floats with half of its volume immersed and Q floats with Description: E:\KCET-1-Feb\Karnataka_CET2013_files\image195.png of its volume is immersed. The ratio of densities of P And Q is

Question 12

Spheres of iron and lead having same mass are completely immersed in water. Density of lead is more than that of iron. Apparent loss of weight is W1 for iron sphere and W2 for lead sphere. Then Description: E:\KCET-1-Feb\KARNATAKA-PAPER-2012_files\image151.png is

Question 13

Two soap bubbles of radii r and 2r are connected by a capillary tube-value arrangement as shown in the diagram. The value is now opened. Then which one of the following will result.
Description: E:\WBJEE\2013\2013_Physics_files\image049.jpg

Question 14

A drop of water detaches itself from the exit of a tap when (σ= surface tension of water, ρ = density of water, R = Radius of the tap exit, r = redius of the drop

Question 15

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
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Dec 10JEE & BITSAT