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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

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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

विकल्प

  • 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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  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 13: Fluid Mechanics - MCQ [पृष्ठ २७१]

APPEARS IN

एचसी वर्मा Concepts of Physics Volume 1 and 2 [English]
अध्याय 13 Fluid Mechanics
MCQ | Q 7 | पृष्ठ २७१

संबंधित प्रश्न

Water in a lake exerts pressure only at its bottom.


Pressure is the thrust acting on a surface of ........... area.


Pressure is reduced if .................... increases.


The unit of thrust is


Name two factors on which the pressure on a surface depends.


Why is the bottom part of the foundation of a building made wider?


A normal force of 200 N acts on an area of 0.02 m2. Find the pressure in pascal.


The base of a container measures 15 cm × 20 cm. It is placed on a table top. If the weight of the container is 60 N, what is the pressure exerted by the container on the table top?


If someone presses a pointed needle against your skin, you are hurt. But if someone presses a rod against your skin with the same force, you easily tolerate. Explain.


It is difficult to cut cloth using a pair of scissors with blunt blades. Explain.


Pressure is directly proportional to the area of contact.


Analogy

Broader straps: ______:: Thin needles: ______.


Scuba divers wear special suits to withstand ______.


All flowing substances, both liquids, and gases are called ______.


Assertion (A): Air gets thinner with increasing altitude.
Reason (R): The atmospheric pressure increases as we go up in mountains.


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.


Define thrust.


Pressure is a scalar quantity because ______.

  1. it is the ratio of force to area and both force and area are vectors.
  2. it is the ratio of the magnitude of the force to area.
  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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