What is the contrast ratio of real world image to the CRT display image?(a) 1:1(b) 4:1(c) 7:3(d) 2:1I have been asked this question in class test.This key question is from Head Up Displays in chapter Displays and Man-Machine Interaction of Avionics

What is the contrast ratio of real world image to the CRT display imag

1.	What is the contrast ratio of real world image to the CRT display image?(a) 1:1(b) 4:1(c) 7:3(d) 2:1I have been asked this question in class test.This key question is from Head Up Displays in chapter Displays and Man-Machine Interaction of Avionics
Answer» The correct answer is (C) 7:3 The BEST EXPLANATION: A combiner allows 70% of the outside world light and 30% of the CRT produced collimated light to pass through it. Thus CONTRAST ration= brightness of real-world light : brightness of CRT light = 70 : 30 = 7 : 3 .

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What is the contrast ratio of real world image to the CRT display image?(a) 1:1(b) 4:1(c) 7:3(d) 2:1I have been asked this question in class test.This key question is from Head Up Displays in chapter Displays and Man-Machine Interaction of Avionics

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