R Ram Sharma 🎓 Coach ⭐ 193.88K Points 📊 General Awareness Q. In which decade were the first successful diode (A) 1890s (B) 1900s (C) 1800s (D) 1880s 👁️ Show Answer 🔗 Share ⚡Menu ✅ Correct Answer: (B) 1900s You must be Logged in to update hint/solution 💬 Discussion 💬 Comment