Question

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

March 28, 2024

Answer

As sound travels faster in iron than in air so first the sound through the iron rail is heard and then the sound through the air is heard. That’s why we hear the sound twice.

💡 Some Related Questions

Explain how do bats locate the obstacles and prey in their way.

Differentiate between infrasonic, sonic, ultrasonic and supersonic sounds.

State two applications of ultrasound.

State two properties of ultrasound that make it useful to us.

Can you hear the sound produced due to vibrations of a seconds’ pendulum? Give reason.

State the approximate speed of ultrasound in air.

What is ultrasound?

Name the sounds of the frequencies given below —(a) 10 Hz (b) 100 Hz (c) 1000 Hz (d) 40 kHz

Complete the following sentences —(a) An average person can hear sounds of frequencies in the range ………. to ……….(b) Ultrasound is of frequency ……….(c) Infrasonic sound is of frequency ……….(d) Bats can produce and hear ………. sound.(e) Elephants produce ………. sound.

Which has a higher frequency — ultrasonic sound or infrasonic sound?