What is the sound barrier? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 and 12 Students CBSE Exams.

What is the sound barrier?

When a plane passes the sound barrier it produces a booming sound. Sound travels at a certain speed depending on the altitude. When the plane flies faster than sound its wing undergoes great stress. This causes a shock wave which produces the booming sound.

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