How can the brightness of the pattern on the screen of cathode ray tube be changed?

Changing the target

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By changing the current on grid

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By changing the negative potential on grid

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Solution

The correct option is C By changing the negative potential on grid
Since the brightness or intensity of the display depends on the number of electrons that strike the screen, the control grid is used to control the brightness of the CRT.

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How can the brightness of the pattern on the screen of cathode ray tube be changed?

The correct option is C By changing the negative potential on gridSince the brightness or intensity of the display depends on the number of electrons that strike the screen, the control grid is used to control the brightness of the CRT.

The correct option is C By changing the negative potential on grid
Since the brightness or intensity of the display depends on the number of electrons that strike the screen, the control grid is used to control the brightness of the CRT.