Advertisements
Advertisements
प्रश्न
What type of sound is produced by elephants and whales?
Advertisements
उत्तर
The elephants and whales produce the sound of frequency less than 20Hz. (means infrasonic sounds)
APPEARS IN
संबंधित प्रश्न
Fill in the blank.
________ produces a sensation in ears.
Write the audible range of frequency for the normal human ear.
Define the term amplitude of a wave. Write its S.I. unit.
Draw a displacement-distance graph of a wave and mark on it, the amplitude of wave by the letter 'a' and wavelength of wave by the letter λ.
A source of wave produces 40 crests and 40 troughs in 0.4 s. What is the frequency of the wave?
What is musical sound? Give an example.
Select the correct option:
A longitudinal wave consists of:
A bat emits an ultrasonic sound of frequency 0.25 MHz. Calculate the time in which one vibration is completed.
How do the following factor affect the speed of sound in air?
Pressure in air.
Give scientific reason.
In earlier times, people used to listen for the arrival of a distant train by putting their ear to the rail.
