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The Pressure in a Liquid at Two Points in the Same Horizontal Plane Are Equal. Consider an Elevator Accelerating Upward and a Car Accelerating on a Horizontal Road. the Above Statement is Correct in - Physics

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प्रश्न

The pressure in a liquid at two points in the same horizontal plane are equal. Consider an elevator accelerating upward and a car accelerating on a horizontal road. The above statement is correct in

पर्याय

  • the car only

  • the elevator only

  • both of them

  • neither of them

MCQ
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उत्तर

the elevator only
The two points in the same horizontal line will not have equal pressure if the liquid is accelerated horizontally. There should be vertical acceleration.

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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 13: Fluid Mechanics - MCQ [पृष्ठ २७१]

APPEARS IN

एचसी वर्मा Concepts of Physics Vol. 1 [English] Class 11 and 12
पाठ 13 Fluid Mechanics
MCQ | Q 7 | पृष्ठ २७१

संबंधित प्रश्‍न

Water in a lake exerts pressure only at its bottom.


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When does a man exert more pressure on the floor: while standing or while walking?


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Find the thrust required to exert a pressure of 50000 pascals on an area of 0.05 m2 ?


Find the area of a body which experiences a pressure of 50000 Pa by a thrust of 100 N?


Multiple Choice Question.

A hydraulic lift is designed to lift heavy objects of maximum mass 2000 kg. The area of cross-section of piston carrying the load is 2.25 × 10-2 m2. What is the maximum pressure the smaller piston would have to bear?


A drinking straw works on the existence of ______.


The total force exerted by a body normal to the surface is called ______.


What is thrust?


In petrol bunks, in what unit is tire pressure measured?


Upthrust = weight of the fluid displaced – apparent weight of the object.


What happens when pressure is increased in solids?


Assertion (A): A sleeping mattress is so designed that when you lie on it, a large area of your body comes in its contact.
Reason (R): This reduces the pressure on the body and sleeping becomes comfortable.


Assertion (A): Wide wooden sleepers are kept below railway lines to reduce pressure on the railway tracks and prevent them from sinking into the ground.
Reason (R): Pressure is directly proportional to the area in which it is acting.


The force exerted by liquid perpendicular to the surface of the body is equal to the product of ______ at that point. 


Pressure is a scalar quantity because ______.

  1. it is the ratio of force to area and both force and area are vectors.
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  3. it is the ratio of the component of the force normal to the area.
  4. it does not depend on the size of the area chosen.

A vessel filled with water is kept on a weighing pan and the scale adjusted to zero. A block of mass M and density ρ is suspended by a massless spring of spring constant k. This block is submerged inside into the water in the vessel. What is the reading of the scale?


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