What conditions were maintained by J.J. Thomson during the production of cathode rays?

High pressure, High voltage

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Low pressure, High voltage

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Low pressure, Low voltage

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High pressure, Low voltage

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Solution

The correct option is B
Low pressure, High voltage

The discharge tube is a glass tube connected to a vacuum pump. J.J. Thomson created a very low pressure inside the discharge tube and applied high voltage.
He observed the formation of a greenish glow near the anode of the glass tube. This stream of rays emitted from the cathode is called cathode rays.

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