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प्रश्न
If you place your ear close to an iron railing which is tapped some distance away, you hear the sound twice. Explain why?
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उत्तर
Sound travels in iron faster than in air so first the sound travelled in iron rail is heard and then the sound travelled in air is heard.
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संबंधित प्रश्न
How does the following factor affect, if at all, the speed of sound in air:
Frequency of sound
How does the following factor affect, if at all, the speed of sound in air:
Pressure of air
How does the following factor affect, if at all, the speed of sound in air:
Moisture in air
Complete the following sentence :
A longitudinal wave is composed of compression and ____________.
The time period of a simple pendulum is 2 s. Find its frequency.
Select the correct option:
The number of oscillations passing through a point in unit time is called:
Define the term wavelength.
State four differences between the sound wave and the light wave.
How are sound waves produced? How are sound waves transmitted from one place to the other?
How will the following factors affect the speed of sound in air:
Temperature of air.
