मराठी

An inflated balloon is placed inside a big glass jar which is connected to an evacuating pump. What will you observe when the evacuating pump starts working? Give a reason for your answer. - Physics

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प्रश्न

An inflated balloon is placed inside a big glass jar which is connected to an evacuating pump. What will you observe when the evacuating pump starts working? Give a reason for your answer.

टीपा लिहा

उत्तर

When evacuating pump starts working, pressure inside the glass jar reduces. As the pressure inside the balloon is more than pressure outside the balloon inside the glass jar, so balloon with burst.

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Relation Between Volume of Submerged Part of a Floating Body, the Densities of Liquid and the Body
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पाठ 5: Upthrust and Archimedes’ Principle - Subjective Questions

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गोयल ब्रदर्स प्रकाशन A New Approach to ICSE Physics Part 1 [English] Class 9
पाठ 5 Upthrust and Archimedes’ Principle
Subjective Questions | Q 17.2

संबंधित प्रश्‍न

A body of density ρ is immersed in a liquid of density ρL. State the condition when the body will (i) float and (ii) sink in the liquid. 


A body held completely immersed inside a liquid experiences two forces:

(i) F1, the force due to gravity and

(ii) F2, the buoyant force.

Draw a diagram showing the direction of these forces acting on the body and state the condition when the body will float or sink. 


Express the relationship between the C.G.S. and S.I. units of density. 


A loaded cargo ship sails from sea water to river water. State and Explain your observations. 


Explain the following : 

Toy balloons filled with hydrogen rise to the ceiling, but if they are filled with carbon dioxide, then they sink to the floor.


A piece of wood of uniform cross section and height 15 cm floats vertically with its height 10 cm in water and 12 cm in spirit. Find the densities of wood and spirit. 


A wooden block floats in water with two-third of its volume submerged.
(a) Calculate the density of wood. 
(b) When the same block is placed in oil, three-quarters of its volume is immersed in oil. Calculate the density of oil.
 


When a piece of ice floating in water melts, the level of water inside the glass remains same. Explain.


Select the correct option:

With the increase in the density of the fluid, the upthrust experienced by a body immersed in it:


Select the correct option:

The ratio between the mass of a substance and the mass of an equal volume of water at 4°C is called:


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