Розмір відео: 1280 X 720853 X 480640 X 360
Показувати елементи керування програвачем
Автоматичне відтворення
Автоповтор
Sir Amazing Lecture....Totally fan ho gya ....Thanks
Thank you sir
👍👍
speed of sound is maximum in solids not air.
But our signal travel in air, not in solid,
Sir Amazing Lecture....Totally fan ho gya ....Thanks
Thank you sir
👍👍
speed of sound is maximum in solids not air.
But our signal travel in air, not in solid,