(A) To focus the electrons only.
(B) To accelerate and focus the electrons.
(C) To accelerate electrons only.
(D) To control the brightness of spot on screen.
»Important Links:
Online Test Preparation and Mcqs Website.
(A) To focus the electrons only.
(B) To accelerate and focus the electrons.
(C) To accelerate electrons only.
(D) To control the brightness of spot on screen.