With the aid of a diagram, describe an experiment to show that cathode rays travel in straight line

With the aid of a diagram, describe an experiment to show that cathode rays travel in straight line

Electrons emitted from the cathode, C are accelerated by the anode A towards a Maltese cross placed in the center of the glass tube. A sharp shadow of the Maltese cross is cast on the screen at the end of the tube. This shows that cathode rays travel in a straight line.

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