46) Select the set of colors produced in the beam-penetration method of the color CRT – a.Red, Green, Blue b.Cyan, Magenta, Blue c.Red, Green, Orange, Yellow d.Green, Black, Orange
Answer: (c) Red, Green, Orange, Yellow Explanation: Beam penetration method in color CRT produces four colors only, red, green, orange and yellow. A beam of slow electrons excites the outer red layer only; hence, the screen only shows red color. A beam of high-speed electrons excites the inner green layer. Thus the screen shows a green color.
