Determine what is the diameter of the hole

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Reference no: EM13650241

The electron beam in a cathode-ray tube is accelerated through apotential difference of 290 V. The electrons then pass through a small circularhole and are viewed on the screen. You observe that the centralbright spot on the screen is the base of a cone with its apex atthe hole. The outer edge of the cone makesa 0.860 ^\circangle with the original direction ofthe electron beam.

a.) What is the diameter of the hole?

Reference no: EM13650241

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