Physics Crash Course NEET>Chapter 7 - Properties of Bulk Matter>Level 1>Q 26

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Two light balls are suspended as shown in figure. When a stream of air passes through the space between them, the distance between the balls will

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Important Questions on Properties of Bulk Matter

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Physics Crash Course NEET>Chapter 7 - Properties of Bulk Matter>Level 1>Q 27

Bernoulli's theorem is based on the principle of conservation of

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Physics Crash Course NEET>Chapter 7 - Properties of Bulk Matter>Level 1>Q 28

Water from a tap emerges vertically downwards with an initial speed of 1.0 m/s. The cross-sectional area of tap is 10^–4 m². Assume that the pressure is constant throughout the stream of water and that the flow is steady, the cross-sectional area of stream 0.15 m below the tap is :-

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Physics Crash Course NEET>Chapter 7 - Properties of Bulk Matter>Level 1>Q 29

Water flows through a frictionless duct with a cross-section varying as shown in figure. Pressure P at points along the axis is represented by:

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Physics Crash Course NEET>Chapter 7 - Properties of Bulk Matter>Level 1>Q 30

A tank of height

5 m

is full of water. There is a hole of cross-sectional area

1 {cm}^{2}

in its bottom. The initial volume of water that will come out from this hole per second is:

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Physics Crash Course NEET>Chapter 7 - Properties of Bulk Matter>Level 1>Q 31

The pressure of water in a water pipe when tap is opened and closed is respectively

3 \times 10^{5} N / m^{2}

and

3.5 \times 10^{5} N / m^{2}

.With open tap the velocity of water flowing is:

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Physics Crash Course NEET>Chapter 7 - Properties of Bulk Matter>Level 1>Q 32

Water is flowing through a tube of non-uniform cross-section. The ratio of the radii at entry and exit ends of the pipe is

3 : 2

. Then, the ratio of velocities at entry and exit of liquid is,

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Physics Crash Course NEET>Chapter 7 - Properties of Bulk Matter>Level 1>Q 33

The figure shows a soap film in which a closed elastic thread is lying. The film inside the thread is pricked. Now, the sliding wire is moved out so that the surface area increases. The radius of the circle formed by elastic thread will,

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