Cathode Rays and Anode Rays Flashcards

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Cathode Rays

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When a high voltage is applied across the electrodes, some invisible rays moved from the negative electrode to the positive electrodes.

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Path of Cathode Rays

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Travels straight from the cathode at a very high velocity, and it produces shadow of the object placed in its path.

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Flashcards about cathode rays and anode rays

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20 Terms

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Cathode Rays

When a high voltage is applied across the electrodes, some invisible rays moved from the negative electrode to the positive electrodes.

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Path of Cathode Rays

Travels straight from the cathode at a very high velocity, and it produces shadow of the object placed in its path.

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X-rays

Cathode rays produce these when they strike against hard metals like tungsten, copper etc.

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Heating Effect

Cathode rays have this effect on thin metal foils.

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Green Glow/Light Emission

Cathode rays produce this when they strike the glass wall beyond the anode or strike the zinc sulphide screen.

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Penetration

Cathode rays can do this through thin sheets of aluminum and other metals.

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Photographic Effect

Cathode rays have this effect on photographic plates.

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Charge to Mass Ratio

The ratio of charge to mass is the same for all cathode rays irrespective of the gas.

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Anode Rays Property 1

Travel in straight lines and cast shadow of objects placed in their path.

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Anode Rays Property 2

Deflected by magnetic and electric fields, but direction is opposite to cathode rays.

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Anode Rays Property 3

Positively charged.

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e/m Value of Anode Rays

Dependent on the nature of the gas taken in the tube.

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Anode Rays Property 4

Produce flashes of light on ZnS screen.

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Anode Rays Property 5

Pass through thin metal foils.

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Anode Rays Property 6

Produce ionization in gases.

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Charge of a Proton

+1.602 x 10^-19 coulomb

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Mass of a Proton

1.675 × 10^-27 kg or 1.0072 amu

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Mass of Neutron vs. Electron

Mass of neutron is approximately 1840 times the mass of electron.

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K.E. = (1 / 4πε₀) * (2Ze² / r)

Equation related to kinetic energy and distance of closest approach.

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R = R₀A^(1/3)

Formula relating nuclear radius to mass number.