GK
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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of light
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of sound
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less than the speed of sound
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greater than the speed of sound
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Detailed explanation-1: -Supersonic speed is the speed of an object that exceeds the speed of sound (Mach 1). For objects traveling in dry air of a temperature of 20 °C (68 °F) at sea level, this speed is approximately 343.2 m/s (1, 126 ft/s; 768 mph; 667.1 kn; 1, 236 km/h).
Detailed explanation-2: -Objects moving at supersonic speeds are going faster than the speed of sound. The speed of sound is about 768 miles per hour at sea level. That is about four times faster than a racecar. Supersonic includes speeds up to five times faster than the speed of sound!
Detailed explanation-3: -"Chuck” Yeager, flew the Bell X-1 aeroplane 700 miles per hour over the Mojave Desert, California. Yeager became the first person ever to travel faster than sound and the first to create a sonic “boom”.
Detailed explanation-4: -Ranges of Speed Transonic: About Mach 0.8 to Mach 1.2. Air is flowing faster than sound over some parts of the airplane. Supersonic: Greater than about Mach 1.2. Air is flowing faster than sound over the entire airplane.
Detailed explanation-5: -Typical speeds for supersonic aircraft are greater than 750 mph but less than 1500 mph, and the Mach number M is greater than one, 1 < M < 3. In supersonic flight, we encounter compressibility effects and the local air density varies because of shock waves, expansions, and flow choking.