69. In beam penetration method of color CRT, two layer of phosphor coated are a. Red and blue b. Red and green c. Blue and green d. None of these
Option B is correct, Explanation - The Beam-Penetration method has been used with random-scan monitors. In this method, the CRT screen is coated with two layers of phosphor, red and green and the displayed colour depends on how far the electron beam penetrates the phosphor layers.
