s9pycakkalas s9pycakkalas

28-10-2016
Physics

contestada

Why is a cathode ray tube connected to a vacuum pump?

Respuesta :

scme1702 scme1702

02-11-2016

If the cathode ray tube is not evacuated, the electrons emitted collide with the air molecules and cannot reach the screen effectively. Therefore, the CRT is connected to a vacuum pump to remove air.

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