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In an electron gun the control grid is g...

In an electron gun the control grid is given a negative potential relative to cathode in order to

A

Decelerate electrons

B

Repel electrons and thus to control the number of electrons passing through it

C

To select electrons of same velocity and to converge them along the axis

D

To decrease the kinetic energy of electrons

Text Solution

Verified by Experts

The correct Answer is:
B
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