If You Place Your Ear Close to an Iron Railing Which is Tapped Some Distance Away, You Hear the Sound Twice. Explain Why?

If you place your ear close to an iron railing which is tapped some distance away, you hear the sound twice. Explain why?

Short/Brief Note

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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Chapter 8: Propagation of Sound Waves - Exercise 8 (A) [Page 182]

Chapter 8 Propagation of Sound Waves
Exercise 8 (A) | Q 29 | Page 182

How is the frequency of a wave related to its time period?

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

Select the correct option:

The wavelength is the linear distance between the:

State the main factors on which the speed of sound in a medium depends.

Does sound require a material medium for transmission?

Does ultrasonic in a medium travel faster than the audible sound?

Compare approximately the speed of sound in air and steel.

Does light travel faster in air than in water? Why?

How are sound waves produced? How are sound waves transmitted from one place to the other?