Question

HeÿA frndz ✌ ✌

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Define centrifugal force.
.............and......... .....

What is the need of using mercury gas in discovery of electrons.


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Answer 1

HEY mate here is ur query...

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the apparent force that is felt by an object moving in a curved path that acts outwardly away from the center of rotation — compare  centripetal force
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I don't find any where that's there is need of mercury gas in discovery of electrons..
But if u have found then it may be due to following properties of mercury & cathode rays..

lowering the pressure means that there are less molecules to collide with so everything works nicely .
As we know that mercury has low vapour pressure..
Hope this will be reason.(Not sure)
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Hope this will help you..


 

Answer 2

In Newtonian mechanics, the centrifugal force is an inertial force directed away from the axis of rotation that appears to act on all objects when viewed in a rotating frame of reference.


Initially cathode ray tube has gas filled in it which has high pressure. We reduce the pressure of the gas by using a vacuum pump.

No why do we reduce the pressure?Theres a reason given below

Actually if we increase the pressure of gas present inside the tube then we can say that we are increasing the no. Of atoms of the gas.

Remeber that PV=nRT

If volume and temperature is kept constant then pressure is directly proportional to n which is amount of gas in moles.

If the no. of atoms present in the tube increases then the electrons would collide with these atoms..these collisions will act as obstructions in the path of electrons thereby preventing electrons from reaching anode….




hope it helps u