Home
Class 9
PHYSICS
The sounds of frequency less than 20 Hz ...

The sounds of frequency less than 20 Hz are known as

A

Ultra sounds

B

Soft sounds

C

Louder sounds

D

Infrasonics

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • SOUND

    NCERT TAMIL|Exercise Let us Improve our learning (Suggested Projects)|4 Videos

  • SOUND

    NCERT TAMIL|Exercise Problems|4 Videos

  • SOUND

    NCERT TAMIL|Exercise Let us Improve our learning (Higher Order Thinking Questions)|6 Videos

  • REFRACTION OF LIGHT AT PLANE SURFACES

    NCERT TAMIL|Exercise THINK AND DISCUSS|2 Videos

  • UNIVERSE

    NCERT TAMIL|Exercise Problem|2 Videos

Similar Questions

Explore conceptually related problems

Sound whose frequency is 50 Hz?

A person can hear sound waves in the frequency range 20 Hz to 20 kHz. Find the minimum and the maximum wavelengths of sound that is audible to the person. The speed of sound is 360 m s^-1 .

Two sound of very close frequencies say 256 Hz and 260 Hz are produced simultaneously. What isw the frequency of resultant sound and also write the number of beats heard in one second ?

Two sound of very close frequencies say 256 Hz and 260 Hz are produced simultaneously. What isw the frequency of resultant sound and also write the number of beats heard in one second ?

A source producing a sound of frequency 90 Hz is approaching a stationary listener with a speed equal to (1/10) of the speed of sound. What will be the frequency heard by the listener?

A sound wave has a frequency of 200 Hz and a speed of 400ms^(-1) in a medium. Find the wavelength of the sound wave.