MCQ Practice Physics 📖 আলোর দ্রুতি কোনটি? ক <p>3x10<sup>-10</sup>ms<sup>-1</sup></p>খ <p>3x10<sup>-7</sup>ms<sup>-1</sup></p>গ <p>3x10<sup>-8</sup>ms<sup>-1</sup></p>ঘ <p>3x10<sup>-9</sup>ms<sup>-1</sup></p> Favorite Practice Add to Book Explanation & Answer Detailed explanations and answers are restricted. Unlock full access by logging in to your account. 🔒 Unlock the detailed explanation and answers Log In / Sign Up Nextআলোর কোয়ান্টাম তত্ত্বের প্রবক্তা কে?