Question
Download Solution PDFThe term supersonic is used for ____________.
Answer (Detailed Solution Below)
Option 1 : speed more than speed of sound
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NDA 01/2025: English Subject Test
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30 Questions
120 Marks
30 Mins
Detailed Solution
Download Solution PDFCONCEPT:
- Supersonic: The speed of an object more than the speed of the sound (1 Mach).
- Infrasonic sound has a frequency less than 20Hz or less than the audible frequency range.
- Ultrasonic Sound has a frequency of more than 20000 Hz.
- It has a frequency above the upper limit of human hearing or greater than the audible frequency range.
EXPLANATION:
- Option 1: speed more than the speed of sound
- An object's speed more than the speed of sound is called supersonic speed.
- Option 2: frequency of sound wave more than 20KHz
- This range of frequency is called ultrasonic sound.
- Option 3: speed of sound less than 20Hz
- This range is known as infrasonic sound.
- Option 4: speed of rocket in space
- It has no specific term.
- So the correct answer is option 1.
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