Physics
Grade-8
Easy
Question
The distance covered by a rarefaction of a sound wave per unit time is _____.
- The propagation of sound
- The speed of sound
- The maintenance of sound
- The production of sound
Hint:
The distance covered by the rarefaction of a sound wave per unit time is the speed of sound.
The correct answer is: The speed of sound
The distance covered by a rarefaction per unit time represents the speed of sound.
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When a sound producing object moves at a speed greater than that of sound in a medium, it produces _____.
When a sound producing object moves at a speed greater than that of sound in a medium, it produces _____.
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An object is said to be moving at a supersonic speed when its speed is ____ the speed of sound in a medium.
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Which of the following does the speed of sound in a medium not depend on?
Which of the following does the speed of sound in a medium not depend on?
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As the temperature of a medium increases, the speed of sound in it ___.
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1 kHz = ____Hz.
1 kHz = ____Hz.
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The SI unit of speed of sound is ____.
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The audible frequency range of an average human ear is ____.
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The formula for calculating the speed of a sound wave is v = ____.
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The distance covered by a sound wave in a unit time is called ____.
The distance covered by a sound wave in a unit time is called ____.
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The loudness of sound I is ____ to the loudness of sound II.
The loudness of sound I is ____ to the loudness of sound II.
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The picture below shows sound waves in different colors. Pick the color of the sound wave which is of the lowest frequency.
The picture below shows sound waves in different colors. Pick the color of the sound wave which is of the lowest frequency.
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The picture below shows three sound wave forms. They have the same ____.
The picture below shows three sound wave forms. They have the same ____.
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Which of the following has the lowest frequency and lowest amplitude?
Which of the following has the lowest frequency and lowest amplitude?
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