About this previous year paper
Section A
Section A contains short and basic questions that test the fundamental concepts of advanced display technologies. Students need to give brief definitions and short explanations related to optical principles, display components, and basic working of devices. The questions are direct and check theoretical understanding of core topics.
Example Questions from Section A:
Define Snell’s law of refraction.
What is Horopter?
What materials are used in capacitive touchscreens?
What is the difference between LED and conventional diodes?
Explain the basic principle of CRT.
Explain charge transport in OLEDs.
Section B
Section B includes medium-length questions that require detailed explanations of display technologies, components, and systems. Students must describe working principles, construction, and applications of modern display systems. This section tests conceptual clarity and ability to explain technical topics.
Example Questions from Section B:
Explain optical modulation in detail.
Explain graphic controllers.
Describe fabrication and operation of OLED.
Explain MEMS microdisplay.
Explain principles of holographic display.
Explain head-worn displays.
Section C
Section C contains long and advanced questions that require in-depth explanations and technical details. Students must discuss display technologies, processes, and advanced concepts with proper understanding. This section evaluates analytical knowledge and detailed learning.
Example Questions from Section C:
Explain the concept of optical modulation in detail.
Explain photolithographic process.
Describe volumetric 3D display.
Explain electronic viewfinder.
Explain multifocus displays and occlusion displays.