Supersonic air planes generate shock waves, known as

Correct option is A

Supersonic airplanes generate shock waves known as "sonic booms." When an aircraft travels faster than the speed of sound (supersonic speed), it compresses air molecules in front of it, creating a shock wave. This shock wave is heard as a loud explosion-like sound called a sonic boom. It results from the sudden release of pressure as the aircraft breaks the sound barrier.
Important Key Points:
1. Sonic booms occur when an object travels faster than the speed of sound.
2. They are commonly associated with supersonic aircraft.
3. The sound barrier is broken when an aircraft exceeds the speed of sound (~343 m/s at sea level).
4. Sonic booms can cause structural damage if close to the ground.
5. These are studied in aerodynamics to minimize their impact.
6. Modern technology aims to reduce the intensity of sonic booms for supersonic travel.
Knowledge Booster:
· (b) Transition waves: Not related to sonic booms; refers to waves transitioning between mediums.
· (c) Ultrasound: Refers to high-frequency sound waves used in medical imaging, unrelated to sonic booms.
· (d) Transverse waves: Waves where oscillation is perpendicular to the direction of propagation, not related to the shock waves of supersonic aircraft.