Correct Answer - Option 4 : Liquid Crystal
The correct answer is "option 4".
The components of the Memory tube display are:
1. Flooding gun
Hence, Liquid crystal is not a component of the Memory tube display.
1.There are two types of guns in the Memory tube display: Primary gun and flooding gun.
2.Some other components of Memory tube display are:
a. Writing beam
b. storage grid
d. Focusing & deflection system
e. Flood electron