Isamu Akasaki, the Japanese engineer who passed away recently, won the Nobel Prize in physics for inventing what?

Options to the question – Isamu Akasaki, the Japanese engineer who passed away recently, won the Nobel Prize in physics for inventing what?

• Optical fibres
• Blue ray DVDs
• Blue LED.
• Ventilators

The correct answer is Blue LED. Isamu Akasaki, the Japanese engineer who passed away recently, won the Nobel Prize in physics for inventing Blue LED.