Q.10456: जब ध्वनि तरंगें चलती हैं , तो अपने साथ ले जाती है ? |
जब ध्वनि तरंगें चलती हैं , तो अपने साथ ले जाती है ? - When sound waves travel, what do they take with them? - Jab Dhwani Tarangein Chalti Hain , To Apne Sath Le Jati Hai ? General Science in hindi, Physics Dhwani question answers in hindi pdf Urja questions in hindi, Know About Dravyamaan General Science online test General Science MCQS Online Coaching in hindi quiz book Vibhavantar