Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← ScienceWhich outcome results when the band gap of an LED under high current narrows?
A)Luminescence efficiency decreases significantly
B)Increased thermal runaway occurs swiftly
C)Wavelength of light emitted shortens✓
D)Reverse leakage currents are amplified
💡 Explanation
The emitted wavelength decreases because band gap narrowing increases the energy of photons via stimulated Emission, therefore the light shifts to higher-frequency, shorter-wavelength emission, rather than efficiency decreasing which occurs under carrier leakage in other scenarios.
🏆 Up to £1,000 monthly prize pool
Ready for the live challenge? Join the next global round now.
*Terms apply. Skill-based competition.
Related Questions
Browse Science →- Which mechanism reduces hydrogen embrittlement in high-strength steel exposed to acidic environments?
- Which consequence results when nuclear binding energy increases during iron-56 formation?
- Which risk increases when epoxy adhesives form molecular cross-links?
- Which consequence results when parasitic inductance resonates in a buck converter's decoupling capacitor?
- Which mechanism fundamentally limits resolution in extreme UV lithography using coherent laser light?
- Which outcome results when specific impurities bridge band gaps?
