MCQ Practice Physics 📖 একটি ইঞ্জিন 3400 J তাপ গ্রহণ করে এবং 2400 J তাপ বর্জন করে। ইঞ্জিনের দক্ষতা কত? ক 10%খ 29.41%গ 40%ঘ 41.60% 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 This question appeared in Medical Question Bank 2014-15 Question 12