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Question

Does cathode ray pass through only if the anode has perforations?

can't the cathode ray just pass through the anode?

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Solution

Cathode rays are negative charged particles (electrons). They are accelerated towards anode (positive plate). When anode is a plate, they are absorbed in the plate and completes the circuit so that current passes through outside wire.

But when the anode is made of porous plate. The cathode ray particles are passing through the hole and reaching the another side.

This is only a fraction of radiation emitted from cathode as most fraction of cathode rays are absorbed in anode itself eventhough there is a hole in it.

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