CURRENT AFFAIRS

2023

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
With reference to Sonic Booms, consider the following statements:1. These are shockwaves produced by planes flying at a speed equal to or greater thanthe speed of sound.2. Air temperature and pressure affects their travel direction and strength.Which of the statements given above is/are NOT correct?
A
1 only
B
2 only
C
Both 1 and 2
D
Neither 1 nor 2
Explanation: 

Detailed explanation-1: -When a sound source moves faster than the speed of sound, a shock wave is produced as the sound waves interfere. A sonic boom is the intense sound that occurs as the shock wave moves along the ground.

Detailed explanation-2: -An aircraft traveling through the atmosphere continuously produces air-pressure waves similar to the water waves caused by a ship’s bow. When the aircraft exceeds the speed of sound, these pressure waves combine and form shock waves which travel forward from the generation or “release” point.

Detailed explanation-3: -As this wave-front passes an individual, the sudden pressure differential or change in pressure creates the “sonic boom” that we hear. Anything exceeding the speed of sound creates a “sonic boom", not just airplanes. An airplane, a bullet, or the tip of a bullwhip can create this effect; they all produce a crack.

Detailed explanation-4: -There are several factors that can influence sonic booms–weight, size, and shape of the aircraft or vehicle, plus its altitude, attitude and flight path, and weather or atmospheric conditions.

There is 1 question to complete.