Advertisements
Advertisements
प्रश्न
Obtain relationship between the time period and frequency.
Advertisements
उत्तर
- Frequency is the number of times a cycle is completed in a second.
- The frequency & time period is inversely proportional.
The number of vibrations per second is called frequency
The s.i unit of frequency is Hertz. - The time taken to complete one vibration is called time period.
Relationship between the Time Period (T) and Frequency (ƒ): By definition time period is the time taken to complete 1 vibration
Or
In time T, the number of vibration= 1
∴ In 1 second, the frequency or number of vibrations = 1 / T
`ƒ = 1 / t Or t = 1 / ƒ`
APPEARS IN
संबंधित प्रश्न
Loudness is determined by the __________ of vibration.
The ratio of amplitude of two waves is 3:4. What is the ratio of their loudness?
A person standing between two vertical cliffs and 480 m from the nearest cliff shouts. He hears the first echo after 3s and the second echo 2s later. Calculate:
1)The speed of sound.
2) The distance of the other cliff from the person
A person is standing at the seashore. An observer on the ship which is anchored in between a vertical cliff and the person on the shore fires a gun. The person on the shore hears two sounds, 2 seconds and 3 seconds after seeing the smoke of the fired gun. If the speed of sound in the air is 320 ms-1 then calculate:
1) the distance between the observer on the ship and the person on the shore.
2) the distance between the cliff and the observer on the ship.

The pitch of a flute is decreased by ................... length of air column.
If the amplitude of a wave is doubled, what will be the effect on its loudness?
Name the unit in which the loudness of sound is expressed.
Two waves of the same pitch have their amplitudes in the ratio 2 : 3.
(i) What will be the ratio of their loudness?
(ii) What will be the ratio of their frequencies?
Give scientific reason.
In earlier times, people used to listen for the arrival of a distant train by putting their ear to the rail.
