RAS question
Gallium Nitride (GaN) is increasingly used in:
Correct answer: (A) High-efficiency power electronics, 5G infrastructure, and LED lighting.
Gallium Nitride is increasingly used in high-efficiency power electronics, 5G and wireless infrastructure, RF amplifiers, and LED or laser diode applications.
Explanation
Gallium Nitride is a wide-bandgap semiconductor, so the MCQ points to its use in high-efficiency electronics rather than ordinary manufacturing sectors. GaN is used in chargers, EV inverters, 5G base stations, RF amplifiers, and LED or laser diodes because of its high electron mobility and efficiency. The verified PIB release supports the same technology direction: it describes an IISc-MeitY GaN development-line foundry for RF and power applications, and records the minister saying GaN can play a key role in e-vehicles and wireless communication. PIB also calls GaN technology strategically important for 5G, space and defence applications. That makes option A the only option matching GaN's semiconductor role.
Why the other options are wrong
- (B) Paper manufacturing is a bulk materials and process industry, while GaN belongs to semiconductor, RF and power-electronics applications.
- (C) Food processing does not match GaN's described role as a wide-bandgap semiconductor used in power electronics, wireless communication and optoelectronic devices.
- (D) Textile dyeing is unrelated to GaN's semiconductor uses, which centre on RF, power applications, 5G, e-vehicles and LED or laser diode devices.
Concept
This tests the Science and Technology theme of emerging semiconductor materials and their applications. RAS repeats such topics because India-linked electronics, 5G, EVs and strategic technology programmes often appear in current-affairs-based science questions.