Advertisements
Advertisements
प्रश्न
The frequency of a source of sound is 100 Hz. How many times does it vibrate in a minute?
Advertisements
उत्तर
Frequency is defined as the number of oscillations per second. It is given by the relation:
Frequency = `"Number of oscillations"/"Total time"`
Number of oscillations = Frequency × Total time
Given, Frequency of sound = 100 Hz
Total time = 1 min = 60 s
Number of oscillations = υ × t
= 100 × 60
= 6000
Hence, the source vibrates 6000 times in a minute, producing a frequency of 100 Hz.
APPEARS IN
संबंधित प्रश्न
What minimum distance is required between the source of sound and the reflecting surface to hear an echo ? Give reason.
Can sound travel through vacuum?
State whether the following statement is true or false :
Sound produced by a vibrating body travels to our ears by the actual movement of air.
What will be the change in the wavelength of a sound wave in air if its frequency is doubled?
If a ringing bicycle bell is held tightly by hand, it stops producing sound. Why?
Which of the following vibrates when a musical note is produced by the cymbals in an orchestra?
A musical instrument is producing a continuous note. This note cannot be heard by a person having a normal hearing rang. This note must then be passing through.
Figure X shows a trace of a sound wave produced by a particular tuning fork :
(a) On the graph paper given in Figure Y, draw a trace of the sound wave which has a higher frequency than that shown in figure X.
(b) On the graph paper show in Figure Z, draw a trace of the sound wave which has a larger amplitude than that shown in Figure X.
A key of mechanical piano is first struck gently and then struck again but much harder this time. In the second case :
Sound is produced by ______.
