मराठी

The Pressure P1 At a Certain Depth In River Water and P2 at the Same Depth in Sea Water Are Related as :

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प्रश्न

The pressure P1 at a certain depth in river water and P2 at the same depth in sea water are related as :

पर्याय

  • P1 > P2

  • P1= P2

  • P1 < P2

  • P1 -  P= atmospheric pressure

MCQ
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उत्तर

The pressure P1 at a certain depth in river water and P2 at the same depth in sea water are related as : P1 < P2

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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 4: Pressure in Fluids and Atmospheric Pressure - Exercise 4 (A) [पृष्ठ ९३]

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सेलिना Concise Physics [English] Class 9 ICSE
पाठ 4 Pressure in Fluids and Atmospheric Pressure
Exercise 4 (A) | Q 3 | पृष्ठ ९३

संबंधित प्रश्‍न

What causes buoyant force (or upthrust) on a boat ?


Why does a block of wood held under water rise to the surface when released ?


Why do we feel light on our feet when standing in a swimming pool with water up to our armpits ?


The density of water is 1.0 g Cm-3. The density of iron is 7.8 × 10″3 g Cm-3. The density of mercury is 13.6 g Cm-3.
Answer the following:
Will a piece of iron float or sink in mercury?


The diagram below in Fig. 4.12 shows a device which makes the use of the principle of transmission of pressure.

  1. Name the parts labelled by the letters X and Y.
  2. Describe what happens to valves A and B and to the quantity of water in the two cylinders when the lever arm is moved down.
  3. Give reasons for what happens to valves A and B in part (ii).
  4. What happens when the release valve is opened?
  5. What happens to valve B in cylinder P when the lever arm is moved up?
  6. Give a reason for your answer in part (v).
  7. State one use of the above device.

A vessel contains water up to a height of 1.5 m. Taking the density of water 103 kg m-3, acceleration due to gravity 9.8 m s-2 and area of base of vessel 100 cm2, calculate: (a) the pressure and (b) the thrust at the base of vessel.


The pressure of water on the ground floor is 40,000 Pa and on the first floor is 10,000 Pa. Find the height of the first floor. (Take : density of water = 1000 kg m-3, g = 10 m s-2)


A homogeneous block floats on water (a) partly immersed (b) completely immersed. In each case state the position of centre of buoyancy B with respect to the centre of gravity G of the block.


How is thrust different from pressure?


Consider the statement given below and choose the correct option.

Assertion: Water strider slides easily on the surface of the water.

Reason: Water strider experiences less buoyant force.


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