MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Revisiting Waves

The speed of ...

Question

The speed of ultrasonic sound in air is ______________

A

3 \times 10^{8} m s^{- 1}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

340 m s^{- 1}

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

C

1500 m s^{- 1}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

4500 m s^{- 1}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B $340 m s^{- 1}$
Speed of sound depends on the properties of the medium through which it travels. So the speed of ultrasonic sound in air is $340 m s^{- 1}$ .

Suggest Corrections

thumbs-up

0

Similar questions

Q. A bat emits ultrasonic sound of frequency

100 k H z

in air. If this sound meets a water surface, the wavelength of the reflected and transmitted sound are (Speed of sound in air

= 340 m s^{- 1}

= 1500 m s^{- 1}

)

Q. A bat is emitting the ultrasonic sound of frequency

100 kHz

in air. What will be the wavelength of sound heard by a person inside a lake over which bat is flying?
[speed of sound in air

= 340 {ms}^{- 1}

and speed of sound in water

= 1500 {ms}^{- 1}

]

Q. A bat emits ultrasonic sound of frequency 1000 kHz in air. If the sound meets a water surface, what is the wavelength of (a) the reflected sound, (b) the transmitted sound? Speed of sound in air is 340 m s ¯¹ and in water 1486 m s¯¹.

Q. Ultrasonic waves of frequency 4.5 MHz are used to detect tumour in soft tissue. The speed of sound in tissue is 1.5 km s⁻¹ and that in air is 340 m s⁻¹. Find the wavelength of this ultrasonic wave in air and in tissue.

Q. A bat emits ultrasonic sound of frequency

100 kHz

in air. If the sound gets reflected (without transmission and loss of energy) from a water surface then wavelength of the reflected sound is
[speed of sound in air is

340 {ms}^{- 1}

]

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

What Sound Really Is

PHYSICS

Watch in App

explore_more_icon

Explore more

Revisiting Waves

Standard XII Physics

Join BYJU'S Learning Program

CrossIcon